Rhynchosida physocalyx

(A. Gray) Fryxell

Brittonia 30: 458. 1978

Common names: Beaked sida buffpetal
IllustratedWeedy
Basionyms: Sida physocalyx A. Gray Boston J. Nat. Hist. 6: 163. 1850
Treatment appears in FNA Volume 6. Treatment on page 310.

Plants with large taproot. Stems with hairs scattered. Leaves: stipules 3–4 mm; petiole 1/2–3/4 as long as blade; blade 2–5 cm, apex obtuse to acute, surfaces coarsely hairy, hairs stellate abaxially, simple adaxially. Pedicels slender, 1–2 cm. Flowers: calyx green-membranous, lobes apiculate; petals yellow [red basally], 5–8 mm, subequal to calyx; staminal column 3–4 mm, glabrous. Schizocarps 8–9 mm diam.; mericarp blackish. Seeds 2 mm. 2n = 16.


Phenology: Flowering spring–late fall.
Habitat: Deciduous forests, shrublands, roadsides, fencerows, disturbed habitats, sometimes in pastures and lawns
Elevation: 0–1500 m

Distribution

V6 564-distribution-map.jpg

Ariz., N.Mex., Okla., Tex., Mexico, South America (Argentina, Bolivia, Brazil, Uruguay).

Discussion

While this distinctive species, with its Physalis-like inflated fruits, is thought to be native over a wide area and disjunct between southern South America and Mexico and the United States, it is most commonly found in disturbed habitats as are so many other herbaceous mallows.

Selected References

None.

Lower Taxa

None.

... more about "Rhynchosida physocalyx"
Paul A. Fryxell† +  and Steven R. Hill +
(A. Gray) Fryxell +
Sida physocalyx +
Beaked sida +  and buffpetal +
Ariz. +, N.Mex. +, Okla. +, Tex. +, Mexico +, South America (Argentina +, Bolivia +, Brazil +  and Uruguay). +
0–1500 m +
Deciduous forests, shrublands, roadsides, fencerows, disturbed habitats, sometimes in pastures and lawns +
Flowering spring–late fall. +
Illustrated +  and Weedy +
Mallow +
Rhynchosida physocalyx +
Rhynchosida +
species +