Voi,. II.] 



MALLOW FAMILY. 



419 



3. Callirrhoe triangulata (L/eav- 

 enw. ) A. Gray. Clustered Poppy- 

 Mallow. (Fig. 2422.) 



Malva triangulata Leavenw. Am. Journ. 

 Sci. 7: 62. 1824. 



Callirrhoe triangulata A. Gray, Mem. Am. 

 Mem. Acad. (II.) 4: 16 1848. 



Perennial, erect or ascending from a 

 deep root, iX- 2 X high, branched above, 

 pubescent with short hairs. Leaves tri- 

 angular-hastate, the lower long-petioled, 

 crenate or slightly lobed, acute or obtus- 

 ish, 2 / -3 / long, the upper short-petioled 

 or nearly sessile, smaller, 3-5-cleft or di- 

 vided, the lobes narrow, dentate or cre- 

 nate; flowers in terminal panicled clusters, 

 i / -2 / broad, short-pedicelled, deep purple; 

 involucel of 3 linear or spatulate bractlets, 

 nearly as long as the 5-lobed calyx; car- 

 pels numerous, hairy, not rugose, short- 

 beaked. 



Prairies, Illinois to Minnesota, south to 

 Texas. June-Aug. 



4. Callirrhoe involucrata (T. &G.) 



A. Gray. Purple Poppy-Mallow. 



(Fig. 2423.) 



Nuttallia involucrala Nutt. ; Torr. Ann. Lye. N. Y. 

 2: 172. Name only. 1828. 



Malva involucrata T. & G. Fl. N. A. i: 226. 1838. 



Callirrhoe involucrata A. Gray, Mem. Am. Acad. 

 (II.) 4:16. 1848. 



Perennial, branched from a deep root, pro- 

 cumbent or ascending, i-2 long, pubescent 

 with long hispid hairs. Leaves cordate-orbicu- 

 lar, palmately lobed or palmatifid, the lobes ob- 

 tuse or acute, dentate or incised, those of the 

 upper leaves commonly narrower than those of 

 the lower; stipules ovate, conspicuous; pedun- 

 cles terminal and axillary, slender, i -flowered; 

 bractlets of the involucel 3, linear, half the 

 length of the lanceolate acute 3~5-nerved calyx- 

 lobes; flowers red-purple, i / -2^ / broad; carpels 

 rugose-reticulate. 



In dry soil, Minnesota to Texas, Utah and New 

 Mexico and northern Mexico. April-Aug. 



4. NAPAEA L. Sp. PI. 686. 1753. 



Erect perennial herbs, with palmately-lobed leaves, and small white dioecious flowers in 

 ample terminal corymbose panicles. Involucels none. Calyx 5-toothed. Staminate flowers 

 with 15-20 anthers borne at the summit of the stamen-column. Pistillate flowers with 

 8-10 styles, stigmatic along their inner surface, the stamen-column present but destitute of 

 anthers. Cavities of the ovary as many as the styles, i-ovuled. Carpels 8-10, separating at 

 maturity from the axis, beakless, but minutely tipped, imperfectly 2-valved. Seed ascend- 

 ing. [Greek, a dell.] 



A monotypic genus of the east-central United States. 



