Flora of North America species comparison

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Platystemon

cream cups
Habit Herbs, annual, caulescent, usually distinctly pubescent, from fibrous roots.
Stems

leafy, erect to decumbent, branching distally.
Leaves

mostly opposite or whorled, sessile;

blade broadly linear, unlobed.
Inflorescences

axillary or terminal, 1-flowerd;

bracts absent;

bud nodding.
Flowers

receptacle slightly expanded beneath calyx;

sepals 3, with overlapping, loosely connivent flaps;

petals 6, occasionally more on robust specimens;

stamens many in several series;

filaments dilated distally;

pistil 6-many-carpellate;

ovary with each carpel forming almost closed locule with 4-24 ovules;

stigmas 1 per carpel.
Capsules

erect or sometimes nodding, carpels dissociating, each torulose and breaking transversely into 1-seeded segments, sometimes also releasing free seeds.
Seeds

usually many, aril absent.
x

= 6.

Platystemon
Distribution
from USDA
w United States
[BONAP county map]
Discussion

Species 1 (1 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 3. Treatment author: Gary L. Hannan.
Parent taxa Papaveraceae
Subordinate taxa
P. californicus
Name authority Bentham: Trans. Hort Soc. London, ser. 2, 1: 405. (1834)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

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