MALVACEAE 767 



3. Callirrhoe lineariloba (T. & G.) A. Gray. Perennial, sparingly hirsute or glab- 

 rate. Stems usually branched at the base, the branches spreading or decumbent, 1-5 dm. 

 long : leaves few ; blades mostly less than 5 cm. broad, palmately or pedately parted, long- 

 petioled, the segments narrowly linear, entire or parted : lower leaves with broader often 

 cuneate segments : peduncles surpassing the leaves : bractlets linear : calyx conspicuous, 

 commonly about twice as long as the bractlets ; lobes lanceolate, several-nerved : petals 

 pink or lilac, often white at the base, eroded at the top : carpels 12-18, glabrous or nearly 

 so, strongly reticulated, 2.5-3 mm. high. 



On plains or prairies, Texas and adjacent Mexico. Spring to fall. 



4. Callirrhoe involucrata (Nutt.) A. Gray. Perennial, hirsute or hispid-hirsute, 

 the hairs often tending to be appressed. Stems ascending or branched at the base, the 

 branches spreading or procumbent, 1-8 dm. long, more or less branched : leaves several ; 

 blades palmately or pedately 5-7 -parted, mainly 5-10 cm. broad, long-petioled, the seg- 

 ments often more or less cuneate, entire, toothed, lobed or parted : peduncles surpassing the 

 leaves : bractlets linear to oblong or oblong-lanceolate : calyx conspicuous, about twice as 

 long as the bractlets ; lobes lanceolate, ribbed : petals crimson-purple to cherry-red, about 

 2.5 cm. long, eroded at the top : carpels 18-25, manifestly pubescent, 3.5-4 mm. high. 



On plains and sandy soil, Minnesota to Nebraska, Missouri and Texas. Spring to fall. 



5. Callirrhoe Papa ver (Cass.) A. Gray. Perennial by a stout root, strigillose or 

 glabrate. Stems solitary or several together, decumbent or ascending, 2-7 dm. long, 

 simple or corymbose above : leaves with slender petioles ; blades palmately 3-5-lobed or 

 parted, the segments entire, lobed or parted, those of the basal leaves oblong, ovate or 

 oblanceolate : those of the stem leaves linear or nearly so : peduncles slender, 1-3 dm. 

 long : involucels usually of 3 narrow bractlets, separated from the calyx : calyx hirsute ; 

 lobes lanceolate to oblong-lanceolate, acuminate, 1-1.5 cm. long : petals red-purple, obo- 

 vate, 2-4.5 cm. long, erose-denticulate at the apex : carpels 3 mm. long, tuberculate on the 

 back. 



In sandy soil, Georgia to Florida and Texas. Spring and summer. 



6. Callirrhoe alceoides ( Michx. ) A. Gray. Perennial by a thick root, strigillose. 

 Stems erect, 2-5 dm. tall, more or less branched at the base : basal leaves with petioles 

 much longer than the blades ; blades ovate to triangular, palmately lobed or incised : stem- 

 leaves with shorter petioles ; blades palmately cleft or parted into linear or linear-cuneate 

 segments : flowers in terminal racemes or corymbs : calyx pubescent ; lobes triangular or 

 triangular-lanceolate, acuminate, less than 1 cm. long : petals pink or rose, 1-1.5 cm. long, 

 erose-fimbriate at the top : carpels 4 mm. long, coarsely wrinkled on the back and sides, 

 strigillose on top. 



In dry soil, Kentucky to Nebraska, Tennessee and Texas. Spring and summer. 



7. Callirrhoe digitata Nutt. Perennial by a thick root, more or less villous-hirsute 

 below, glabrous above. Stems erect or decumbent, solitary or several together, 3-8 cm. 

 long, corymbose above : basal leaves with petioles about as long as the blades or longer ; 

 blades palmately lobed or parted or the earlier ones coarsely crenate : stem-leaves few, with 

 shorter petioles ; blades palmately divided, the linear or narrow divisions usually entire, 

 3-8 cm. long : peduncles slender or filiform : involucels wanting : calyx nearly glabrous ; 

 lobes ovate to lanceolate, 7-10 mm. long : petals red-purple, white or violet, 1.5-2 cm. 

 long, erose-fimbriate : carpels nearly 4 mm. high, prominently reticulate rugose, glabrous 

 or nearly so. 



In dry soil, Missouri to Kansas and Texas. Spring and summer. 



8. Callirrhoe scabriuscula Robinson. Annual, closely rough-tomentose with stellate 

 hairs. Stems erect, 3-5 dm. tall, simple or nearly so : leaves several ; blades suborbicular 

 in outline, 3-7 cm. in diameter, deeply palmately 3-5-cleft, the segments oblong to lanceo- 

 late, obtuse, entire or few-toothed ; petioles 7-10 cm. long near the base of the stem, 

 shorter above : stipules linear-lanceolate : peduncles firm, much longer than the subtending 

 leaves : bractlets of the involucels linear, 4-6 mm. long : calyx about 2 cm. broad : lobes 

 lanceolate, 8-10 mm. long, acuminate, 3-nerved : petals obovate, 2.5-3 cm. long: carpels 

 4-5 mm. high, densely pubescent with more or less evanescent lateral walls. 



Along the Colorado River, Texas. Summer. 



9. Callirrhoe' pedata A. Gray. Annual, strigillose or glabrate. Stems erect, 3-9 dm. 

 tall, simple or branched : leaves with slender petioles ; blades suborbicular in outline, 

 palmately 3-5-lobed, cleft or parted, the segments narrow, entire or toothed : peduncles 

 surpassing the subtending leaves : calyx glabrate or puberulent ; lobes lanceolate, 8-10 mm. 

 long, acuminate : petals red-purple or sometimes lilac or cherry-red, 2-2.5 cm. long, erose 

 at the top : carpels 4 mm. long, slightly wrinkled on the sides. 



On prairies, Missouri to the Indian Territory and Texas. Spring and summer. 



