OKDER 23. MALVACE.E. 59 



* Stamens 820, perigynons. Capsule opening by a lid (a pj xio) PORTULACA. 1 



* Stamens 10 30, hypogynous. Capsule opening by valves TALINUM. ! 



* Stamens 5. each on the base of a petal. Capsule 3-valved CLATTOMIA. S 



* Stamens 4 15. Capsuie 3-valved. Leaves alternate CALANDRINIA. 4 



1. PORTULACA, Tourn. PURSLANES. Sep. 2, the upper portion 

 deciduous. Pet 5 (4 to 6), equal. Stam. 820. Style 3-6-parted. Pyxis 

 opening near the middle, oo-seeded. Low, fleshy herbs. 



1 1*. oleracea L. Stems reddish, prostrate ; leaves cuneate. (\j Cultivated grounds, 



especially gardens. If. Plant very smooth, succulent. Fls. small, yellow. June Aug. 



2 P. GRANTUFLdRA. Upright ; Ivs. linear, acute ; fls. large, rose-purple. (I) S. Am. 8'. 



3 P. GILLESII. Upright ; Ivs. short, terete, blunt ; fls. large, deep purple. (T) 8. Am 



2. TALINUM, Adans. Sep. 2, ovate, deciduous. Pet, 5, sessile, in- 

 serled with the 10 20 stamens into the torus. Style trifld. Caps. 3-valved, 

 co-seeded. Herbs fleshy, smooth. 



T. teretllollum L. Stem short, thick, with crowded linear Ivs. at the ends of the 

 short branches, with long (60 terminal, naked peduncles, bearing a cyme of purple, 

 ephemeral flowers. 21 Rocks, Penn. to Ga. June Auc. 



3. CLAYTONIA, L. SPRING BEAUTY. (In memory of John Clayton, 

 one of the earliest botanists of Virginia.) Sep. 2, ovate or roundish. Pet 

 5, emargined or obtuse. Stain. 5, inserted on the claws of the petals. Stig. 

 3-cleft. Caps. 3-valved, 2-5-seeded. Small, fleshy, early flowering planta, 

 arising from a small tuber. (Stem with 2 opposite leaves.) 



1 C. Cnrolliiiana MX. Lvs. ovate-lanceolate ; sep. and i>et. obtuse, y. Moist wood3. 



Stem 3', bearing 2 (rarely 3 or 4) leaves ; root leaves few ; fls. white, with purple lines. 



2 C. Virginica L. Lvs. linear or lance-linear; sepals rather acute; petals obovate, 



mostly emarginate or retuse ; ped. slender, nodding. 2t In low, moist grounds, more 

 common than the first, the 2 opposite leaves 3 5' long. Flowers roseate. 



4. CALANDRINIA, H. B. K. (Calandrini was an Italian botanist) 

 Sep. 2. Pet. 3 5. Stam. 4 15, mostly hypogynous. Style short, stig. 3. 

 Caps. 3-valved. Herbs of Chili and California, smooth, with alternate 

 leaves and purple flowers. 



1 C. GRANDIFLORA. Leaves rhomboid ; raceme terminal, v. Chili. If. Fls. near 2'. 



2 C. 8PECi6sA. Leaves linear-spatulate ; flowers axillary. (I) Cal. O 7 . Fls. 1' broad 



ORDER XXIII. MALVACE/E. MALLOWS. 



Herbs or shrubs with alternate, stipulate leaves and regular flowers, with 



5 sepcJs united at base, valvate in the bud, often subtended by an involucel; 



6 petals hypogynous, convolute in the bud, with the stamens GO monadel- 

 phous, hypogynous, and 1-celled reniform anthers. Pistils several, dis- 

 tinct, or united, and stigmas various. Fruit a several-celled capsule, or a 

 collection of 1-seeded indehiscent carpels. Seeds with little or no albumen, 

 and a curved embryo. 



Calyx naked, t. ., having no involnceL (6) 

 { Calyx involncellate. Carpels (and styles) more than 5. (a) 

 Carpels 3 to 5 only, 1-seeded. (e) 



-S- oc-eeoded. (d) 



