734 FLORA. 



entire or 1-2 -toothed appendages. In shaded places, N. J. and Penn. to Fla. and 

 La. Sept. -Nov. 



16. Gentiana Porphyrio J. F. Gmel. ONE-FLOWERED GENTIAN. (I. F. f. 

 2881.) Glabrous; stem 1.5-4.5 dm. high. Leaves linear, firm, 2-5 cm. long. 

 2-4 mm. wide, or the upper and lower shorter; flowers short-peduncled, about 

 5 cm. high; calyx-lobes linear, longer than the tube; corolla funnelform, bright 

 blue, sometimes brown-dotted within, its lobes ovate, spreading, 1-1.5 cm - l n g> 

 three times as long as the laciniate appendages, or more; seeds oblong, wingless. 

 In moist pine barrens, southern N. J. to Fla. Aug.-Oct. 



5. PLEUROGYNE Eschol. 



Slender annual glabrous herbs, with opposite leaves, and rather large flowers 

 in terminal racemes or panicles, or solitary at the ends of the peduncles. Calyx 

 deeply 4~5-parted; segments nari-ow. Corolla rotate, 4-5-parted; lobes ovate or 

 lanceolate, convolute, acute, with a pair of narrow appendages at the base. Sta- 

 mens 4 or 5, inserted on the corolla-tube. Ovary i-celled; ovules numerous; style 

 none; stigma decurrent along the sutures of the ovary. Capsule 2-valved. Seeds 

 small, numerous. [Greek, referring to the lateral stigmatic surfaces.] About 7 

 species, of the colder parts of the northern hemisphere. 



Leaves linear or lanceolate; sepals linear. i. P. rotata. 



Leaves spatulate or lanceolate; sepals ovate to lanceolate. 2. P. Carinthiaca. 



1. Pleurogyne rotata (L.) Griseb. PLEUROGYNE. (I. F. f. 2882.) Stem 

 erect, 1-4 dm. high. Leaves 1-5 cm. long, 2-4 mm. wide, the basal spatulate or 

 oblong; sepals about the length. of the lanceolate to oblong-lanceolate corolla-seg- 

 ments, which are 8-12 mm. long; capsule narrowly oblong. Greenland and Lab. 

 to Alaska, south in the Rocky Mts. to Colo. Also in Europe and Asia. Summer. 



2. Pleurogyne Carinthiaca (Wulf.) Griseb. SMALLER PLEUROGYNE. (I. F. f. 

 2883.) Similar to the preceding, but mostly smaller and more slender, rarely over 

 1.5 dm. high, the stems or branches i-few-flowered; leaves spatulate, ovate, 

 oblong, or lanceolate, 6-12 mm. long; sepals ovate to lanceolate, shorter than the 

 corolla-segments or at length equalling them, these 6-12 mm. long, ovate, andl 

 acute; capules ovoid-oblong. Lab. and Quebec. The American plant was sep- 

 arated from the European by Dr. Gray as var. pusilla. 



6. FRASERA Walt. 



Perennial or biennial erect glabrous herbs, with opposite or verticillate leaves, 

 and rather large flowers in terminal cymose panicles or thyrses. Calyx 4-parted. 

 Corolla rotate, 4-parted, the lobes convolute in the bud, each bearing i or 2 

 fringed glands within. Stamens 4, inserted on the base of the corolla-tube; fila- 

 ments sometimes united at the base; anthers versatile. Ovary ovoid, i-celled; 

 style distinct; stigma 2-lobed or nearly entire. Capsule ovoid, coriaceous, com- 

 pressed, 2-valved, few-seeded. Seeds flattened, smooth, margined or narrowly 

 winged. [In honor of John Fraser, a botanical collector.] Eight species, natives 

 of N. Am. 



i. Frasera Carolinensis Walt. AMERICAN COLUMBO. (I. F. f. 2884.) 

 Stem 9-12 dm. high, stout. Leaves mostly verticillate in 4's, those of the stem 

 lanceolate or oblong, acute or acutish, 7-15 cm. long, the basal ones spatulate or 

 oblanceolate, usually larger, the uppermost bract-like; inflorescence often 6 dm. 

 long; flowers slender-pedicelled, about 2.5 cm. broad: corolla yellowish white with 

 brown-purple dots, its lobes broadly oblong, bearing a circular long-fringed gland; 

 capsule much compressed, 1-1.6 cm. high, longer than the calyx. In dry soil, 

 western N. Y. and Ont. to Wis., Ga. and Ky. June-Aug. 



7. TETRAGONANTHUS S. G. Gmel. 



Glabrous herbs, with opposite leaves, and middle-sized flowers in often pan- 

 icled cymes. Calyx deeply 4-cleft or 4-parted. Corolla campanulate, 4~5-cleft, 

 the lobes convolute in the bud, each with a hollow spur or projection below. 

 Stamens 4 or 5, inserted near the base of the corolla; anthers versatile. Ovary 

 i-celled, the placenta more or less intruded; ovules numerous: style short, or none; 

 stigma 2-lobed. Capsule 2-valved. Seeds globose -ovoid, smooth. [Greek, allud- 



