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The IAS Newsletter is a quarterly publication of the International Aroid Society, with brief articles relating to aroid cultivation and research, as well as other topics of interest to its membership and general Society news.


Current and back issues of the Newsletter are available only to members of the IAS as a benefit of membership.


Ideas and articles are always welcome!


Feel free to send us your notes on research projects, methods for growing aroids, aroid recipes, stories, news, book reviews, aroid literature and resources of interest to you, upcoming events and conference announcements, and artwork and photos. We also love to hear suggestions for a topic you would like to learn more about.


Newsletter content and idea/suggestion submissions may be sent to the editor. Please send any content contributions as Microsoft Word documents; if your submission contains photos, please attach the photo files to your email separately as well, with recommended insertion points listed if not indicated in the document. Articles will, with the author's permission, link embedded photos to larger size online photos. The larger-sized photos may include watermarks or copyright notices at the author's direction. Photos may be submitted in a wide range of formats including JPEG, TIFF, PNG, BMP & RAW (including NEF & DNG).


See the listing of current and back issues below.

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THE IAS NEWSLETTER 

VOLUME 47 NO. 1 - MARCH 2025

The March 2025 issue of the Aroid Newsletter (Vol 47 No 1) brings together a diverse array of articles covering the latest research, conservation efforts, cultivation advice, and society news. Highlights include a report on advances in molecular phylogeny of Araceae, a spotlight on the striking Anthurium rothschildianum, and practical tips for managing common pests in greenhouse settings. Members will also find recaps of recent society gatherings, an update on conservation initiatives in Southeast Asia, and previews of upcoming conference sessions. Together, these contributions offer both beginner-friendly overviews and in-depth technical insights for enthusiasts and researchers alike.



  • Society News - President’s Message: Reflections on Aroid Research in 2025
  • Convention Recap Highlights from the 2024 International Aroid Symposium
  • Featured Species Spotlight on Anthurium rothschildianum: Ecology and Cultivation
  • Cultivation & Care - Greenhouse Guide: Managing Humidity for Tropical Aroids
  • Conservation Corner - Protecting Endangered Araceae in Southeast Asia
  • Research Update - Molecular Phylogeny of Arisaema: New Insights
  • Field Report -Colombian Rainforest Expedition: Discoveries in Sitpani Valley
  • Ask the Expert - Identifying and Treating Common Aroid Pests
  • Member Contributions - Grower Spotlight: Techniques from a Hobbyist in Florida
  • Upcoming Events - Call for Papers - Aroid 2025 Virtual Conference
  • Publications & Resources - Recent Books and Articles on Araceae
  • Classifieds & Membership NoticesSeed Exchanges, Plant Sales, and New Member Welcome
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Volume 47, Num. 1

Vol. 47 No. 1 of IAS Newsletter features an Ecuador Araceae expedition, Guianas Anthuriums, tissue culture, plus society updates and the upcoming expo.


Volume 46, Num. 4

Expo 2024 highlights, aroid anatomy insights, a Rio Oiapoque expedition, propagation and germination research, and new Philippine aroid species.


Volume 46, Num. 3

August 2024 IAS Newsletter features AI-based aroid identification, anatomy insights, variegation trends, new Aglaonema ‘Maria Cecilia’, and Expo info.


Volume 46, Num. 2

June 2024 IAS Newsletter features long‑term aroid cultivation insights, the new Anthurium ‘Black Haribon’ cultivar, obituaries, and expo details.


Volume 46, Num. 1

Explore Bucephalandra aquarium hybrids, Anubias seed propagation, a French Guiana aroid trail, Philippine plant market trends, and the Tropical Plant Expo.

Volume 45, Num. 4

Discover Thailand’s vibrant aroid culture as Joep Moonen tours Bangkok plant markets and gardens, highlighting rare species and colorful hybrids.


Volume 45, Num. 3

August 2023 IAS Newsletter features a Thailand field report on Cryptocoryne hunting, Singapore highlights, propagation tips, conference recap and show & sale.

Volume 45, Num. 2

Features Amerindian aroid relics in the Guianas, a Thai expedition uncovering Cryptocoryne cordata var. siamensis, and info on the 46th IAS Show & Sale.


Volume 45, Num. 1

Explore rare aroid profiles, a palm host species, a new aroid specialist, and society updates in the IAS Newsletter Vol. 45 No. 1 January 2023.


Volume 44, Num. 3

Explore IAS Newsletter Vol 44 No 3 (Aug 2022): Swedish plant swap, Meconostigma stem care, aroid research update, board vacancies, and show & sale details.

Volume 44, Num. 2

Explore the June 2022 IAS Newsletter, featuring Philodendron × joepii’s discovery, a unique Philodendron wittianum stand, and upcoming events.

Volume 44, Num. 1

Highlights Colombian research ventures, propagation breakthroughs in Schismatoglottis ‘PIKACHU’, a Philodendron variegation discovery, and an IAS grant.

Volume 43, Num. 4

December 2021 IAS Newsletter features Philodendron pollination, species profiles, Araceae field discoveries, Anthurium care and new board members.


Volume 43, Num. 3

August 2021 IAS Newsletter with a Guatemala Araceae expedition, Anthurium 'Delta Force', aroid cultivar portal, Philodendron squamiferum, and the IAS show.

Volume 43, Num. 2

June 2021 IAS Newsletter honors John Banta, unveils a novel floating tubercle study in Amorphophallus dracontioides, and showcases Philodendron grandipes.

Volume 43, Num. 1

Explore the March 2021 IAS Newsletter featuring rare Philodendron hybrids, Cryptocoryne discoveries, Amydrium clones, and essential greenhouse tools.


Volume 42, Num. 4

December 2020 IAS Newsletter explores the European aroid community, Thailand’s Best Aroid Show, Cryptocoryne tips, and a Mid America plant swap.

Volume 42, Num. 3

Discover Nancy’s aroid collection research, Lasia concinna rediscovery, Nest‑Anthurium spotlights, and IAS updates in Vol 42 No 3 August 2020.


Volume 42, Num. 2

The June 2020 IAS Newsletter honors Josef Bogner with tributes, career highlights, personal recollections, and rare photographic memories.


Volume 42, Num. 2 Supplement

Vol 42 No 2 Supplement of IAS Newsletter showcases volunteer efforts in herbarium support, digital imaging, scientific research, and greenhouse operations.

Volume 42, Num. 1

Explore the March 2020 IAS Newsletter: Monstera expedition in Colombia, insect‑aroid studies in Mexico, Urospatha insights and a SE Asia expedition log.


Volume 41, Num. 4

December 2019 IAS Newsletter features obituaries of Drs. Dressler and Soukup, a show and sale recap, research highlights, and tropical aroid field reports.


Volume 41, Num. 3

Explore Monstera fieldwork in Mexico, reproductive biology studies in Costa Rica, a new scholarship, Dewey Fisk tribute, and the 42nd Annual Show & Sale.

Volume 41, Num. 2

Explore ecology of Anthurium gracile, Philodendron acutatum, and Adelonema picturata in neotropical habitats, plus IAS conference and show updates.


Volume 41, Num. 1

Discover Thomas B. Croat’s Ecuador expedition and the Latin American Aroid Symposium highlights in IAS Newsletter Vol 41 No 1 March 2019.


Volume 40, Num. 4

Rediscover Lorenzia umbrosa, explore a collaborative Stenospermation revision, celebrate annual show awardees, and learn about a new conservation initiative in the Dec 2018 IAS Newsletter.

Volume 40, Num. 3

Overview of the 41st IAS Show and Sale in Miami with Dr. Artur Maia on floral scents, travel insights, and Missouri Botanical Garden Araceae research.


Volume 40, Num. 2

Explore Tom Croat’s Mexico collecting trip, plants and an insect named for Josef Bogner, oil bee pollination of Anthurium, and highlights from the Aroid Show.

Volume 40, Num. 1

Recap of IAS’s 40th anniversary meeting at Fairchild Gardens, award presentations, poster sessions from Cali, and show photos in the March 2018 newsletter.

Volume 39, Num. 4

Dec 2017 IAS Newsletter reports on the XII International Aroid Conference in Cali, Monstera pollination, Montrichardia profile, obituary, and show news.


Volume 39, Num. 3

Highlights new findings on Dieffenbachia paludicola habitat and cultivation challenges, plus details of the 40th Annual IAS Show and Sale in Miami.


Volume 39, Num. 2

June 2017 IAS Newsletter covers obituaries of aroid giants Bunting and Nicolson, Dieffenbachia paludicola profile and conference updates.


Volume 39, Num. 1

Discover Philodendron pedatum variation, meet researcher Ranjita Tamuli Talukdar, honor Jack Williford, and find conference and award updates.


Volume 38, Num. 4

IAS Newsletter Vol 38 No 4 December 2016 features a new Philodendron hybrid, Monstera research, a book review, Allan Rossel tribute, and conference news.

Volume 38, Num. 3

Explore Vol 38 No 3 of the IAS Newsletter with an Ecuador travelogue, expert tributes, Society event details, guest speaker profile, and aroid recipes.


Volume 38, Num. 2

June 2016 IAS Newsletter honors Dan Nicolson, details Colombian Araceae Research Group, Anaphyllopsis americana cultivation, and the 2017 conference.

Volume 38, Num. 1

IAS Newsletter Vol 38 No 1 (March 2016) covers Bucephalandra propagation, Araceae research, taxonomic updates, publications, tributes and emerging researchers.

Volume 37, Num. 4

Discover Araceae diversity in Colombia, publication updates, new species finds, care tips and Philodendron in IAS Newsletter Vol 37 No 4 December 2015.


Volume 37, Num. 3

Discover highlights of the August 2015 IAS Newsletter Vol 37 No 3: the 38th Annual Show and Sale, a Hawaiian aroid travelogue, Hotta’s legacy, and more.


Volume 37, Num. 2

IAS Newsletter Vol 37 No 2 covers Ecuadorian Oriente discoveries, propagation tips, speaker news, greenhouse plans, an NSF grant, and member profiles.

Volume 37, Num. 1

IAS Newsletter Vol 37 No 1 (March 2015) covers Croat’s Ecuadorian expedition, a new Philodendron discovery, Bucephalandra propagation and workshop highlights.

Volume 36, Num. 4

December 2014 IAS Newsletter: Show highlights, Sarawak aroid research, awards, titanum bloom history, new discoveries and society minutes.


Volume 36, Num. 3

IAS Newsletter Vol 36 No 3 (Aug 2014): 37th Show & Sale, Felipe Cardona profile, Quindío expedition, Philodendron ushanum discovery, proxy ballot.


Volume 36, Num. 2

Explore the June 2014 IAS Newsletter featuring the discovery of Philodendron ‘Joepii’, expedition highlights, cultivation notes, and collector stories.

Volume 36, Num. 1

IAS Newsletter Vol 36 No 1 features an Ecuador expedition report, researcher profiles, society news, volunteer tributes, and Hanoi conference highlights.


Volume 35, Num. 4

December 2013 IAS Newsletter features the Miami Show & Sale, President’s letter, Croat’s South American expedition and the first Colombian Aroid Conference.


Volume 35, Num. 3

August 2013 IAS Newsletter: highlights include the 36th Show and Sale at Fairchild, a Wild Arum book review, Borneo trip, Monocots V report, and obituary.

Volume 35, Num. 2

Discover aroid explorations in Borneo, guest speaker Dr. M. Sivadasan, rediscovery of Piptospatha insignis, weed potential and Bucephalandra studies.


Volume 35, Num. 1

Vol 35 No 1 (March 2013) covers a detailed expedition to Western Ecuador, offering field observations, plant discoveries, and society updates.


Volume 34, Num. 4A

In this January 2013 issue, Thomas B. Croat shares a detailed account of his Colombian expedition, highlighting fieldwork and new Araceae species discoveries.

Volume 34, Num. 4

Discover Thomas Croat’s aroid explorations in Colombia, Dylan Hannon’s IAS Show insights, Hanoi conference announcement, and the 2012 financial report.

Volume 34, Num. 3

IAS Newsletter August 2012 previews the 35th Show and Sale, covers botanical highlights in Jakarta and Singapore, describes Bakoa fruits and banana moth alert.

Volume 34, Num. 2

June 2012 IAS Newsletter covers Taiwan garden reports, Peninsular Malaysia Araceae review, aquatic snail studies and society updates.


Volume 34, Num. 1

Features Indomalayan and Australasian aroid keys, Jama‑Coaque field notes, Hapaline appendiculata infructescence observations, and Bernard Jadin memorial.

Volume 33, Num. 4

Discover geology’s role in Borneo aroids, mark Edouard André’s centenary and explore the IAS President’s message, Guianas field report and show recap.


Volume 33, Num. 3

Highlights from the IAS Newsletter Vol. 33 No. 3: Show and Sale recap, living wall guide, Brazil Conference info, and proxy ballot details.


Volume 33, Num. 2

June 2011 issue features hybrid Caladium breakthroughs, MidAmerica meeting highlights, Guianas expedition report, Arisaema book review, packing tips, and Ambrosina bassii.

Volume 33, Num. 1

March 2011 IAS Newsletter features a tribute to Steve Lucas, Anthurium inventory at Rio site, book review, cultivation tips, and community news.


Volume 32, Num. 4

December 2010 Vol 32 No 4 of the Aroid Newsletter covers new research, cultivation tips, regional reports and upcoming conferences in the Araceae community.

Volume 32, Num. 3

August 2010 IAS Newsletter honors Tricia Frank and Julius Boos, introduces two new Anthurium species, and details society news, show dates, and ballot.


Volume 32, Num. 2

The June 2010 IAS Newsletter features the 2nd MidAmerica Chapter meeting, Simon Mayo’s Kew retirement, researcher profiles, and a tribute to Joe Wright.


Volume 32, Num. 1

Explore elephant ear aroids, meet emerging researchers, and catch up on IAS society news and chapter events in the March 2010 issue.


Volume 31, Num. 4

Vol 31 No 4 December 2009 IAS Newsletter recap of the Show & Sale, Philippine Alocasia, member spotlights, awards, and financial report.


Volume 31, Num. 3

Highlights of the August 2009 IAS Newsletter include the Nancy Aroid Conference report, Vienna Araceae Project research, 32nd Show & Sale details, and member forms.

Volume 31, Num. 2

Discover limestone aroid diversity in Sarawak, a tribute to Dr Graf, West Coast Chapter highlights, Colombian conference findings, and Nancy conference preview.

Volume 31, Num. 1

Vol 31 No 1 March 2009 features a Colombia and Ecuador field trip report, Anthurium seed propagation tips, Quindío floristic research, student profile, and conference news.

Volume 30, Num. 4

The December 2008 IAS Newsletter marks the final print edition and features articles on the transition to digital publication, research, awards, and events.


Volume 30, Num. 3

August 2008 Vol 30 No 3 of the IAS Newsletter features Schismatoglottis species insights, Show and Sale preview, book review, registration guide, and society updates.

Volume 30, Num. 2

This issue highlights Croat’s Flora of Veracruz project, field expeditions, Anthurium seed storage tips, a Karel Havlicek profile, and obituaries.


Volume 30, Num. 1

Discover Croat’s expedition in Colombia and Ecuador, Birdsey award news, a new Arisaema ciliatum variant, and Part II of Matang Massif research.


Volume 29, Num. 4

December 2007 issue explores the Aroids of Matang Massif, new Araceae research in Colombia, honors Dorothy Shaw’s legacy, and shares show impressions.


Volume 29, Num. 3

Preview the 30th IAS Show & Sale at Fairchild Tropical Botanic Garden, tributes to Dorothy Henkle and Ralph McAfee, Colombian fieldwork insights, and administrative forms.

Volume 29, Num. 2

June 2007 IAS Newsletter highlights Arisaema studies in Arunachal Pradesh, a Gunung Mulu report, a European researcher profile and tribute to Murline Lydon.

Volume 29, Num. 1

Explore tropical aroid diversity in Gunung Mulu National Park, Ecuador fieldwork, and Alocasia brisbanensis abnormalities in the March 2007 IAS Newsletter.


Volume 28, Num. 4

IAS Newsletter Vol 28 No 4 (Dec 2006) covers aroid expeditions in Ecuador & Montet, Jack Williford turning 90, new research, and 2006 show highlights.


Volume 28, Num. 3

IAS Newsletter Vol 28 No 3 (August 2006) previews the 29th Annual Show & Sale, travel highlights, obituaries, a stamp-collecting guide, and Board election details.

Volume 28, Num. 2

Discover field reports from Sarawak and Ecuador, Arisaema awards, society news and more in IAS Newsletter Vol 28 No 2 May 2006.


Volume 28, Num. 1

Vol 28 No 1 (Feb 2006) of the IAS Newsletter highlights Croat’s Ecuador exploration, society news, financials, botanical research updates and a member survey.

Volume 27, Num. 4

Discover species updates, cultivation advice, taxonomy insights, and society news in the International Aroid Society Newsletter Vol 27 No 4 (Sep 2005).


Volume 27, Num. 3

July 2005 Aroid Newsletter (Vol 27, No 3): conference report, species spotlight, hybrid updates, cultivation tips, pest alerts, and society news.


Volume 27, Num. 2

Explore IAS Newsletter Vol 27 No 2 (April 2005): Ecuador expedition report, Cretaceous Araceae pollen review, konnyaku guide, aroid book critiques, literature roundup, and Alocasia hybrid notes.

Volume 27, Num. 1

IAS Newsletter Vol 27 No 1 Feb 2005 offers Borneo rainforest explorations, European aroid activities, horticultural programs, website highlights, society news.


Volume 26, Num. 3

IAS Newsletter Vol 26 No 3 (Dec 2004): Show and Sale report, feature article with book review, and Breeders Banter updates.



Volume 26, Supplement

Spotlights two Asian gardens, aquatic snail‑aroid relationships, Araceae in Peninsular Malaysia, plus a preview of the upcoming show and Aroideana journal.



Volume 26, Num. 2

Explore the discovery of a new Anthurium species, cultivation tips, conference highlights, member news and more in Aroid Society Newsletter Vol 26, No 2, June 2004.


Volume 26, Num. 1

Explore part 1 of Aroid collecting in Ecuador, plus new species introductions, breeder insights, and a feature on Xanthosoma blandum in this March 2004 issue.

Volume 25, Num. 4

December 2003 Aroid Newsletter covers report from the Show and Sale, Shingle Plants, Philodendron Look-alikes, International Aroid Symposium Announcement, Aroid Botanical Art.

Volume 25, Num. 3

August 2003 Aroid Newsletter covers Alocasia advincula discovery, Cape Oasis feature, seed propagation tips, Alocasia lowii ‘Tiffany’ and Monica Carlsen profile.


Volume 25, Num. 2

June 2003 IAS Newsletter (Vol 25 No 2) highlights the Birdsey Memorial Award, breeder insights, two Araceae book reviews, Philodendron gloriosum, and show updates.

Volume 25, Num. 1

Highlighting IAS news: President’s letter, Near East member profile, breeders forum, Ecuador field report, Arisaema anecdote, and meeting minutes.


Volume 24, Num. 4

December 2002 IAS Newsletter covers board meeting minutes, editorial news, new members, recent publications, Aroideana Vol. 25, finances, and show highlights.

Volume 24, Num. 3

Explore commercial uses of aroid foliage, expert profiles, event reports, cultivation tips, and society news in IAS Newsletter Vol 24 No 3 Aug 2002.


Volume 24, Num. 2

July 2002 IAS Newsletter Vol 24 No 2 – president’s message, Brazil trip report part 2, Amorphophallus titanum feature, auction list, global aroid cuisine, contest & memorial.

Volume 24, Num. 1

Discover field adventures in Acre, member contests, society updates, upcoming events and scientific reports in the IAS Newsletter Vol 24, No 1 (Apr 2002).

Volume 23, Num. 3

Highlights from the IAS Newsletter Vol 23 Nos 3 & 4 (Nov 2001): Show reports, auction results, festival features, finance statements, global field highlights, and member news.

Volume 23, Num. 2

August 2001 IAS newsletter previews Annual Show & Auction, highlights neotropical research and field studies, and provides society news and event details.


Volume 23, Num. 1

IAS Newsletter Vol 23 No 1 (June 2001): editorial overview, Aroideana 2001 preview, Croat’s South America trip, Araceae research, Alocasia insights.


Volume 22, Num. 3

Vol 22 No 3 (Jul‑Sep 2000) IAS Newsletter: Show news, literature highlights, Garden Adieu, Anthurium barclayanum berries, auction info.


Volume 22, Num. 2

June 2000 Aroid Society Newsletter covers Arisaema species, skunk cabbage inflorescence, annual show, Whyanbeel Arboretum profile, and aroids book release.

Volume 3, Num. 12

December 1979 IAS Newsletter: year‑end reflections, mailing challenges, member updates, Philodendron gloriosum feature, financial reports and 1980 board election results.

Volume 3, Num. 11

Nov 1979 Aroid Newsletter covers the Fairchild Aroid Show review, growing tips for Philodendron pittieri, member news, and society updates for enthusiasts.



Volume 3, Num. 10

October 1979 Aroid Newsletter: meeting updates, program recap on aroid flowers, Fairchild show details, Aglaonema feature, member listings, and financial report.


Volume 3, Num. 9

International Aroid Society Newsletter Vol 3 No 9 (Sep 1979): meeting notice, cultivation articles, member profile, dues reminders, Wanted list, and society news.



Volume 3, Num. 8

August 1979 Aroid Newsletter Vol 3 No 8 includes meeting reminders, society news, board decisions, financial and membership updates, a health warning, and a Philodendron warszewiczzii feature.

Volume 3, Num. 7

July 1979 issue of the International Aroid Society newsletter: meeting details, member Q&A, research updates, plant sale plans, dues info, new members, and application form.


Volume 3, Num. 6

Highlights of Aroid Society Newsletter Vol 3 No 6 (Jun 1979): trip recaps, member updates, disease‑control advice, chapter news, and upcoming events.


Volume 3, Num. 5

Discover the May 1979 Aroid Newsletter: meeting details, plant show info, travel notes, Alocasia pollination study, dues updates, and member news.


Volume 3, Num. 4

April 1979 IAS Newsletter: meeting update, flower show recap, Dieffenbachia cultivar registry plan, propagation tips, events, and member news.


Volume 3, Num. 3

Discover the International Aroid Society’s March 1979 newsletter with meeting news, show rules, plant of the month, herbarium project, and member updates.


Volume 3, Num. 2

Discover the Feb 1979 Aroid Society newsletter with meeting reminders, member letters, chapter reports, and membership updates.


Volume 3, Num. 1

Jan 1979 issue of the International Aroid Society Newsletter previewing the January meeting, officer updates, Monstera deliciosa feature, care tips, financials and classifieds.

Volume 2, Num. 12

December 1978 Aroid Newsletter covers a plant auction recap, 1979 board election, Colocasia esculenta feature, holiday reflections, corrections, and member news.

Volume 2, Num.11

A November 1978 Aroid Newsletter featuring an auction meeting preview, chapter news, a Dasheen mosaic virus article, new member listings, hybrid parentage insights, and classifieds.

Volume 2, Num. 10

October 1978 IAS newsletter featuring Nov meeting plans, cultural tips for aroid climbers, new member listings, classifieds, and chapter news.


Volume 2, Num. 9

Sep 1978 Aroideana Vol 2 No 9 covers society news, Madison’s Amazon trip, Amorphophallus article, care and landscape tips, classifieds and member updates.

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