Washington, D.C. · Nonprofit
INTERNATIONAL ASSOCIATION FOR PLANT TAXONOMY (USA)
INTERNATIONAL ASSOCIATION FOR PLANT TAXONOMY (USA) (Washington, D.C.) receives grants from 1 organization whose IRS filings report $89 to it, the largest being AMAZONSMILE FOUNDATION ($89). 1 of them have funded it in more than one year, and 100% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $659k
- Funders on record
- 1
- Grants received
- $89
- Net assets
- $2.2M
What International Association for Plant Taxonomy (Usa) does
Mission
The organization promotes all aspects of botanical systematics and its significance to the understanding and values of biodiversity through the publication and online access of its quarterly journal and handbook series which provide outlets for small papers and large reference works, news, reviews, the latest code, etc. And through established committees for specific purposes relating to plant taxonomy in all its phases.
As stated on its FY2019 Form 990.
Programs
Membership - providing affiliation and information to botanists. Sponsoring speakers and attendance at botanical conferences, and meetings.
$11,490 spentGrants - iapt funds competitive grants in plant systematics, with emphasis on supporting research by students and young investigators in developing countries, but is open to applicants world-wide.
$101,378 spentEvents - as one of the most active members of the international association of botanical and mycological societies (iabms), iapt plays an essential role in the organization of international botanical congresses, held every six years. The botanical congresses, along with the international mycological congress held every four years, are the largest and most significant international meetings for their respective communities. The iapt facilitates and supports a nomenclature section meeting at each congress, where amendments to the international code of nomenclature are considered and voted on.
$10,744 spent
The 3 programs described on its FY2025 Form 990-PF.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2024 to 2025, from $1.9M to $2.2M (+18%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
0% of INTERNATIONAL ASSOCIATION FOR PLANT TAXONOMY (USA)’s revenue is contributions — more earned-revenue than three-quarters of its peers (79% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 0 of the last 3 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Board chair
Warren K Wagner
Board chair
As listed on its FY2025 Form 990-PF.
Who funds it, year by year
2020 → 2022: the base held at 1 funder, grant income rose $24 → $38.
1 of 1 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 100% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of INTERNATIONAL ASSOCIATION FOR PLANT TAXONOMY (USA)’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Where its funders are
100% of INTERNATIONAL ASSOCIATION FOR PLANT TAXONOMY (USA)'s grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Too little is directly attributable to place on a map.
Funder states come from each funder’s own filing. $89 arriving through sponsors registered in 1 state is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
INTERNATIONAL ASSOCIATION FOR PLANT TAXONOMY (USA) has grown faster than three-quarters of the 453 science & tech nonprofits its size.
this organization peer median middle 50% of peers· 453 science & tech nonprofits $100k–$1M, FY2025
Organizations like INTERNATIONAL ASSOCIATION FOR PLANT TAXONOMY (USA)
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Washington, D.C.
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Screen this organization
A dated, signed PDF of the compliance screen for INTERNATIONAL ASSOCIATION FOR PLANT TAXONOMY (USA): IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds INTERNATIONAL ASSOCIATION FOR PLANT TAXONOMY (USA)?
- INTERNATIONAL ASSOCIATION FOR PLANT TAXONOMY (USA) (Washington, D.C.) receives grants from 1 organization whose IRS filings report $89 to it, the largest being AMAZONSMILE FOUNDATION ($89). 1 of them have funded it in more than one year, and 100% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does INTERNATIONAL ASSOCIATION FOR PLANT TAXONOMY (USA) have?
- IRS filings report 1 organization giving $89 in grants to INTERNATIONAL ASSOCIATION FOR PLANT TAXONOMY (USA), 1 of which have funded it in more than one year.
- Who is the largest funder of INTERNATIONAL ASSOCIATION FOR PLANT TAXONOMY (USA)?
- AMAZONSMILE FOUNDATION is the largest funder on record, with $89 in grants. The full list of funders is on this page.
- How can an organization like INTERNATIONAL ASSOCIATION FOR PLANT TAXONOMY (USA) find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Washington, D.C.. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 1 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing