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1. MALVA L. (MALLow.) 
Herbs, with rounded and mostly lobed leaves, axillary fascicled flow- 
ers, a 3-bracted calyx, obcordate petals, humerous styles stigmatic down 
the inner side, and a depressed fruit separating at maturity into as 
many 1-seeded indehiscent round kidney-shaped blunt carpels as there 
are styles. 
1. M. borealis Wallm. Annual, erect or somewhat decumbent, hairy or nearly 
glabrous: leaves round-cordate, erenate, more or less strongly 5 to 7-lobed : peduncles 
(solitary or clustered) 2 to 6 mm. long: ealyx-lobes becoming very broad and en- 
larged in frnit: petals 4 to 6 mm. long, whitish: carpels transversely reticulate- 
rugose.—An Old World plant, apparently naturalized throughout the southern bor- 
der of Texas. 
2. M. rotundifolia L. (COMMON MALLOW.) Stems procumbent from a biennial 
root: leaves round-cordate, on very long petioles, crenate, obscurely lobed: peduncles 
elongated and flowers larger: petals twice as long as calyx, whitish: carpels pubes- 
cent, even.—The most common introduced mallow of the Atlantic States and reported 
from Gillespie County. Doubtless abundant enough throughout eastern Texas. 
3. M. sylvestris L. Biennial: stem erect and branched, 6 to 9 dm. high: leaves 
sharply 5 to 7-lobed: petals thrice the length of the calyx, large, purple and rose- 
color: carpels wrinkled-veiny.—Introduced from Europe, usually along waysides, and 
reported from Gillespie County. 
2. CALLIRHOBE Nutt. 
Herbs, with mostly lobed or divided leaves, showy axillary or racemed 
flowers, a 3-bracted or naked calyx, wedge-shaped and truneate petals, 
styles as in Malva, and 10 to 20 straightish beaked carpels (indehiscent 
or partly 2-valved). 
* Involucel of 3 bractlets. 
1. C. involucrata Gray. Hirsute or hispid, procumbent: leaves rounded, 5 to 7- 
parted or -cleft, the segments incisely lobed: peduncles elongated, 1-flowered: the 
lanceolate 3 to 5-nerved sepals twice as long as the involucel : petals red or purplish: 
carpels rugose-reticulated.—Common in river valleys west of the Colorado. Var. PAL- 
mata Britton has 3 to 5-parted leaves and mostly white flowers. (C. palmata Buck- 
ley.) Tom Green County (Tweedy). 
2, C. lineariloba Gray. Resembling the last, of which it has been considered a 
variety: but little hirsute, sometimes glabrous: stems ascending: leaves once or 
twice pedately parted, segments or lobes linear or lanceolate: involucral leaves 
smaller and erect: carpels smoothish.—A Mexican species, found in the adjacent 
southeastern counties of Texas. 
* * Tnvolucel none. 
3, C. alczeoides Gray. Strigose-pubescent: stems slender, 3 dm. high, erect from 
a perennial root: lower leaves triangular-cordate, incised, the upper 5 to 7-parted, 
laciniate, the uppermost divided into linear segments: flowers rose-color to white, 
corymbose, on slender peduncles: carpels strongly rugose.—A gravelly soil species of 
the southwest, and reported from Gillespie County. 
4, C. digitata Nutt. Sparsely hirsute or glabrous, erect: leaves few, round-cor- 
date, 5 to 7-parted, the cauline commonly with linear divisions: peduncles subrace- 
mose, long and filiform: flowers red-purple to white: carpels pilose on the back and 
rugose-reticulated.—Common on the prairies and in the valleys. 
5. C. pedata Gray. Closely resembling the last species, but more leafy, with a 
smaller head of fruit, and smooth carpels with a very large and thick beak.—A verr 
abundant prairie mallow, with showy cherry-red flowers, ~ 
