ORDER 23. MALVACEAE. 59 



* Stamens 8 20, peripynous. Capsule opening by a lid (a pyxis) PORTULACA. 1 



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



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



* Stamens 4 15. Capsule 3-valved. Leaves alternate CALANDKINIA. 4 



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

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

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



1 1*. oloriioea L. Stems reddish, prostrate ; leaves cnneate. (T) Cultivated grounds, 



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



2 P. GRANIMFLORA. Upright ; Ivs. linear, acute ; fls. large, rose-purple. S. Am. 8 f . 



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



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

 serted with the 10 20 stamens into the torus. Style trifid. Caps. 3-valved, 

 Qo-seeded. Herbs fleshy, smooth. 



T. teretifolium 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. 14 Rocks, Pcnn. to Ga. June Aug. 



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

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

 5, emargincd or obtuse. Stam. 5, inserted on the claws of the petals. Stig. 

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

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



1 C* a roll ilia a a MX. Lvs. ovate-lanceolate ; sep. and pet. obtuse. 14 Moist wood*. 



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



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



mostly emarginate or retu^c : peel, slender, nodding, it In low, moist grounds, more 

 common than the first, the 2 opposite leaves 35' 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, it Chili. If. Fls. near V. 



2 C. SPECIOSA. Leaves linear-spatulate ; flowers axillary. Cal. 6'. Fls. V broad. 



ORDER XXIII. MALVACEAE. MALLOWS. 



Herb* or slirvbs with alternate, stipulate leaves and regular flowers, with 

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

 5 petals hyppgynous, convolute in the bud, with the stamens oo mouadel- 

 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 indehisceut carpels. Seeds with little or no albumen^ 

 and a carved embryo. 



Calyx naked, f. t.. having no involucel. (6) 

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

 Carpels 3 to 5 on 1 }', 1-seeded. (<) 



S oc-8f>eded. (<t) 



