310 COXVOLVULACE.E. (CONVOLVULUS FAMILY.; 



3. POLEMONIUM, L 



Calyx bcll-sliapud, G-ikft. Corolla >lioii-l(ill-slia|j(iJ, 5-lol)C'd. Stamens 5, 

 ck'cliiR'il, iii!<eitcd equally on the throat of the corolla, wiih a hairy appeiidaj^e 

 at the base of the filaments. Ovules numerous in the cells. CapNule ovoid. 

 Seeds anj^led. — Herbs, with alternate pinnately divided leaves, and blue or 

 white flowers in a nearly bractlcss corymb. 



1. P. reptans, L. Smooth ; stem weak, dift'uscly branched ; leaves pcti- 

 olcd, pinnate, with 5-13 lanceolate or elliptical entire leaflets; corymbs pedun- 

 elcd, few-flowered ; flowers noddini; ; calyx-lobes ovate, acute ; corolla blue ; 

 anthers white. — Siiady mountain woods. South Carolina, and northward. Aju'il 

 and May. U — Stem i°- 1° high. Leaflets ^'- U' long. Calyx enlarged in 

 fruit. 



4. PYXIDANTHERA, Miehx. 



Calyx 3-bractcd, 5-sepalous. Corolla bell-shaped, .■i-lobed ; the lobes rounded, 

 imbricated in the bud. Stamens broad, adnatc to the tube of the corolla : anther- 

 cells roundish, awncd at the base, opening by a transverse line. Ovules 5-8 

 in each cell. Capsule few-seeded. — A small creeping shrub, with ascending 

 very leafy branches. Leaves evergreen, linear, bearded at the base, the upper 

 ones alternate. Flowers solitary, terminal. Sejials oblong, obtuse, ciliate. 

 Corolla small, white. 



1. P. barbulata, Miehx. (I)iapensia, £//.)— Dry pine bancns. North 

 Carolina, and northward. April and May. — Stems 3' - 6' long. Leaves 2" - 

 3" long. 



Order 99. CONVOLVULACE^. (Convolvulus 

 Family.) 



Chiefly twining or prostrate herbs, with alternate exstipulate leaves, 

 and regular mostly showy and fugaceous flowers. — Calyx 5-scpalous, im- 

 bricated. Corolla bell-shaped, funnel-shaped, or salver-fbrm, 5-plaited or 

 5-lobed, convolute in the bud. Stamens 5, inserted on the tube of the 

 corolla: anthers 2-eelled, sagittate. Ovary free, single or double, 1-4- 

 celled, with 1-2 erect anatropous ovules in each cell. Styles 1 or 2, 

 entire or 2-cleft. Stigmas capitate, ovate, or acute. Capsule 2 - 6-seeded. 

 Embryo large, coiled or curved in mucilaginous albumen. 



Synopsis. 



Tribe I. CONVOIjVUL.E.«!. — Ovary single. Embryo with leafy cotyledons. Cap- 

 sule opening by valves. — Flowers axillary, single or cymose. 

 » Style single. Stigmas globose. 



1. QUAMOCLIT. Capsule 4-eelled, 4-seeded. Corolla (red) salver-shaped. Stamens ex. 



serted. 



2. BATATAS. Capsule 4-celled, 4-seeded. Corolla bell-shaped. Stamens included. 



