GEXTIANACE^. (GENTIAN FAMILY.) 335 



§ 2. Stems shnihbi/, tujled, creeping : leaves subulate, rigid, leafy in the axils: 



style short. 



11. P. SUbulata, L. Pubescent ; flowering stems erect ; leaves very nu- 

 merous, the upper ones linear and mostly alternate ; calyx teeth subulate, 

 erect, spine-pointed; lobes of the corolla notched or entire. (P. setacea, 

 L.I) — Sandy pine barrens. April -May. — Stems 4'- 12' long. Leaves 

 4" -6" long. Corolla i'-l' broad, purple or white. 



P. Drummondii, Hook., is an annual species, common in gardens. 



2. GILIA, Ruiz & Pavon. 



Calyx tubular or bell-shaped, 5-cleft. Corolla funnel-shaped, 5-lobed. Sta- 

 mens inserted equally near the mouth of the corolla. Ovules commonly 

 numerous in the cells. Capsule oblong or obovoid. Seeds angled or com- 

 pressed. — Herbs, with finely divided leaves and showy flowers. 



1. G. COronopifolia, Pers. Stem tall, simple, pubescent; leaves pin- 

 nately divided into many filiform segments; flowers scarlet, racemose or 

 panicled; corolla tubular-funnel-shaped; stamens exserted. — Dry sandy 

 soil, South Carolina, and westward. July. (2) — Stem 2° - 4° high. Corolla 

 1' long, yellow and spotted with red within. 



3. POLEMONIUM, L. 



Calyx bell-shaped, 5-cleft. Corolla short-bell-shaped, 5-lobed. Stamens 5, 

 declined, inserted equally on the throat of the corolla, with a hairy appendage 

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

 Seeds angled. — Herbs, with alternate pinnately divided leaves, and blue or 

 white flowers in a nearly bractless corymb. 



1. P. reptans, L. Smooth ; stem weak, diffusely branched ; leaves peti- 

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

 cled, few-flowered ; flowers nodding ; calyx lobes ovate, acute ; corolla blue ; 

 anthers white. — Shady woods in the upper districts. April - May. 2/ — 

 Stem V^- 1° high. Leaflets -J'- 1-J' long. Calyx enlarged in fruit. 



Order 9L GENTIANACE^. (Gentian Family.) 



Chiefly smooth and bitter herbs, with colorless juice, opposite en- 

 tire partly sheathing exstipulate leaves, and regular often showy 

 flowers. — Calyx 4-12-parted, or 4-12-cleft. Corolla 4-12-lobed, 

 convolute, rarely valvate or imbricated in the bud, hypogynous. 

 Stamens alternate with the lobes of the corolla, and inserted on its 

 tube : anthers 2-celled. Ovary single, with numerous anatropous 

 ovules. Stigmas 1-2. Capsule 1-celled, or imperfectly 2-4-celled 

 by the introversion of the margins of the valves, septicidally 2-valved. 

 Placentae parietal. Seeds numerous. Embryo minute, in the axis of 

 fleshy albumen. 



