146 ELEMENTS OF BOTANY. 



I. ALTH^A. 



Biennial or perennial lierbs ; stems erect, hairy or pubes- 

 cent ; flowers nearly sessile, involucre of 6-9 bracts 5 an- 

 thers at the top of the column ; styles many ; carpels many, 

 1 -seeded, indehiscent, separating from the axis at maturity. 



A. ROSEA Cav. Hollyhock. Biennial; stem erect, 3-6 ft. high, 

 hahy; leaves cordate, 5-7-angied, the lobes irregularly toothed, 

 rugose ; flowers large, sessile, white or colored, often double. Sum- 

 mer. Cultivated and often spontaneous. 



11. MALVA. 



Annual, biennial or perennial herbs ; stems smooth or hair}^, 

 erect or procumbent ; involucel 3-leaved, persistent ; flowers 

 peduncled ; petals obcordate ; anthers at the top of the column ; 

 styles mauy ; carpels numerous, 1-seeded, indehiscent. 



M. ROTUNDiFOLiA L. Cheeses. Stem annual or perennial, 

 })rocumbent; leaves long-petioled, round-cordate or reniform, crenate 

 or crenately lobed; flowers single or clustered; petals white wdth 

 purple veins, about twice tlie length of the calyx lobes; styles 10- 

 20 ; carpels broadly renifonn. not beaked, pubescent. May-Novem- 

 ber. Common around dwelhngs. 



III. CALLIRRHOE. 



Perennial herbs ; stem erect, ascending or procumbent ; 

 leaves long-petioled, lobed or divided ; involucel 1-3-leaved, 

 persistent, or none ; flowers perfect ; calyx deeply cleft ; 

 petals wedge-shaped, entire or crenate at the apex ; anthers 

 at the top of the stamen tube ; styles many ; carpels numer- 

 ous, 1-seeded, beaked at the apex. 



C. Papaver (Cav.) Gray. Poppy Mallow. Stem simple or 

 branched above, erect, rough-pubescent, 12-18 in. high; leaves 3—5- 

 parted, the lobes oblong or lanceolate, irregularly toothed ; involucel 

 1-3-leaved or none; flowers axillary, solitary, on peduncles some- 

 times 1 ft. long, purple, l|-2 in. wide; petals finely crenate at the 

 apex. May-Sei;>tember. Rich, open woods. 



