Flora of North America species comparison

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Callirhoë scabriuscula

Texas poppy mallow
Habit Plants perennial.
Stems

1(–6), stiffly erect, 3.2–10 dm, densely hairy, hairs 6–8-rayed, stellate.
Leaves

stipules persistent, linear-lanceolate, 5.8–8.5 mm;

petiole 1.5–10 cm;

blade suborbiculate, 3- or 5-lobed, 4–6.5 × 3.8–7 cm, surfaces stellate-hairy, lobes oblong to oblanceolate or linear-oblanceolate.
Inflorescences

racemose;

involucellar bractlets (1–)3, linear, 5.5–10 × 0.7–1.5 mm.
Flowers

bisexual;

calyx lobes valvate in bud, forming apiculate or acuminate point;

petals reddish purple with deep-red basal spot, 3–3.7(–4) cm.
Schizocarps

7.8–12 mm diam.;

mericarps 12–20, 4.2–5 × 3.2–4 mm, hairy, indehiscent;

beaks not prominent, 0.7–2 mm;

collars absent.
2n

= 30.

Callirhoë scabriuscula
Phenology Flowering spring.
Habitat Quaternary (Holocene) wind-blown sand deposits
Elevation 600 m (2000 ft)
Distribution
from FNA
TX
Discussion

Of conservation concern.

Callirhoë scabriuscula is found only in west-central Texas along the upper Colorado River where it has adapted to a rare edaphic niche, relict Quaternary sand dunes. Plants produce taproots up to one meter long. The U.S. Fish and Wildlife Service lists this species as endangered.

Callirhoë scabriuscula is in the Center for Plant Conservation’s National Collection of Endangered Plants.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 6, p. 245.
Parent taxa Malvaceae > subfam. Malvoideae > Callirhoë
Sibling taxa
Callirhoë alcaeoides, Callirhoë bushii, Callirhoë digitata, Callirhoë involucrata, Callirhoë leiocarpa, Callirhoë papaver, Callirhoë pedata, Callirhoë triangulata
Name authority B. L. Robinson: in A. Gray et al., Syn. Fl. N. Amer. 1(1,2): 302. (1897)
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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