Flora of North America species comparison

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Sphaerophysa

Austrian peaweed, Austrian peaweed or field pea, sphaerophysa, swainsona
Habit Herbs, perennial, unarmed; with creeping rhizomes.
Stems

erect, strigulose.
Leaves

alternate, odd-pinnate;

stipules present;

petiolate;

leaflets (9–)15–25, opposite, stipels absent, blade margins entire, surfaces glabrous or pubescent.
Inflorescences

5–17-flowered, axillary, racemes;

bracts and bracteoles present.
Flowers

papilionaceous;

calyx campanulate, lobes 5;

corolla dull brick-red or orange-red [blue], 10–15 mm;

stamens 10, diadelphous;

anthers basifixed;

style bearded distally.
Fruits

legumes, stipitate, bladdery-inflated, ovoid or globose, indehiscent, pubescent.
Seeds

40, reniform.
x

= 8.

Sphaerophysa
Distribution
from USDA
se Europe (Turkey); c Asia; e Asia [Introduced in North America; introduced also in South America (Argentina)]
[BONAP county map]
Discussion

Species 2 (1 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 11. Author: Richard R. Halse.
Parent taxa Fabaceae > subfam. Faboideae
Subordinate taxa
S. salsula
Name authority de Candolle in A. P. de Candolle and A. L. P. P. de Candolle: Prodr. 2: 270. (1825)
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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