ORDEB 23. MALVACEAE. 59 



* Stamens 620, perigynons. Capsule opening by a lid (a pyxis) PORTTJLACA. 1 



* Stamens 10 30, hypogynous. Capsule opening by valves TALINUH. 2 



Stamens 5, each on the base of a petal. Capsnle 3-valved CLAYTONIA. 3 



* Stamens 415. Capsule 3-valved. Leaves alternate , C ALANDRIXIA. 4 



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

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

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



1 P. oleracea L. Stems reddish, prostrate ; leaves cnneate. (T) Cultivated grounds, 



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



2 P. GRANDIFLORA. Upright ; Ivs. linear, acute ; fls. large, rose-purple. @ S. Am. &. 



3 P. GILLESII. Upright ; Ivs. short, terete, blunt ; fls. large, deep purple. S. Am. 



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

 serted with the 1020 stamens into the torus. Style trifid. Caps. 3-valved, 



oo-seeded. Plerbs fleshy, smooth. 



T. teretiiolium 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, il Rocks, Penn. to Ga. June Aug. 



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. Stam. 5, inserted on the claws of the petals. Stig. 

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

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



1 C. Carolliiiana MX. Lvs. ovate-lanceolate ; sep. andfet. obtuse. 11 Moist woods. 



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. ii In low, moist grounds, more 

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



4. CAIiANDRINIA, 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. ii Chili. If, Fls. near 2'. 



2 C. SPECIOSA. Leaves linear-spatulate ; flowers axillary. Cal. (/. Fls. 1' broad. 



ORDER XXHI. MALVACE^S. MALLOWS. 



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

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

 5 petals hypogynous, convolute in the bud, with the stamens oo 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. (Z>) 

 S Calyx involucellate. Carpels (and styles) more than 5. (a) 

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



8 co-seeded, (d) 



