98 MALVACEAE. (MALLOW FAMILY.) 



M. ALCEA, L., with the stem-leaves only once 5-parted or cleft, the lobes 

 incised, large flowers like the last, but the fruit smooth, and bractlets of the 

 involucel ovate, has escaped from gardens. (Adv. from Eu.) 



3. CALLIRRHOE, Nutt. 



Calyx either naked or with a 3-leaved iuvolucel at its base. Petals wedge- 

 shaped and truncate (usually red-purple). Styles, etc., as in Malva. Carpels 

 10-20, straightish, with a short empty beak, separated within from the 1- 

 seeded cell by a narrow projection, indehiscent or partly 2-valved. Radicle 

 pointing downward. (Name drawn from Greek mythology.) 



* Involucel 3-lcaved. 



1 . C. triangulata, Gray. Hairy -pubescent ; stems nearly erect (2 

 high) from a fusiform root; leaves triangular or halberd-shaped, or the lowest 

 rather heart-shaped, coarsely creuate; the upper incised or 3 - 5-clef t ; flowers 

 panicled, short-pedicelled (purple) ; involucel as long as the 5-cleft 5-nerved 

 calyx; carpels not rugose. Dry prairies, Ind. to Minn., and southward. 



2. C. involucrata, Gray. Hirsute or hispid, procumbent; leaves 

 rounded, 5-7-parted or -cleft, the segments inciscly lobed : peduncles elon- 

 gated, 1-flowcred; calyx 5-parted, the lanceolate 3 -5-nerved sepals twice as 

 Jong as the involucel ; petals red or purplish , carpels indehiscent, rugose- 

 reticulated. Minn, to Tex. 



* * Involucel none; calyx 5-parted; carpets strongly rugose. 



3. C. alcaeoides, Gray. Strigose-pubescent ; stems slender (1 high), 

 erect from a perennial root; lower leaves triangular-heart-shaped, incised, the 

 upper 5 - 7-parted, laciniate, the uppermost divided iuto linear segments; 

 flowers (rose-color or white) corymbose, on slender peduncles Barren oak- 

 lands, S. Ky. to Kan. and Neb. 



4. C. digitata, Nutt. Sparsely hirsute or glabrous, erect; leaves few, 

 round-cordate, 5-7-parted, the cauline commonly with linear divisions; pe- 

 duncles subracemose, long, filiform; flowers red-purple to white. Kan. to 



Tex. 



4. NAP-33A, Clayt. GLADK MALLOW 



Calyx naked at the base, 5-toothed. Petals entire. Flowers dioecious ; the 

 staminate flowers destitute of pistils, with 15-20 anthers; the fertile with a 

 short column of filaments but usually no anthers. Styles 8- 10, stigmatic 

 along the inside. Fruit depressed-globular, separating when ripe into as many 

 kidney-shaped 1-seeded beakless and scarcely dehiscent carpels as there are 

 styles. Radicle pointing downward. A tall roughish perennial herb, with 

 very large 9-11-parted lower leaves, the pointed lobes pinnatifid-cut and 

 toothed, and with small white flowers in panicled clustered corymbs. (Named 

 from vairij, a glade or dell, or, poetically, a nymph of the glades.) 



1. N. dibica, L. Stems nearly simple, 5-9 high. Penn. to Va., and 

 west to Iowa and Minn. ; rare. July. 



5. MALVASTRUM, Gray. FALSE MALLOW. 



Calyx with an involncel of 2 or 3 bractlets, or none. Petals notched at the 

 end or entire. Styles 5 or more ; stigmas capitate. Carpels as in Malva, or 



