618 GENTIANACEAE. (Vor. IT. 
15. Gentiana villosa L. Striped Gentian. 
(Fig. 2880.) 
Gentiana villosa I, Sp. Pl. 228. 1753. 
Gentiana ochroleuca Froe\. Gent. 35. 1796. 
Perennial, glabrous or nearly so; stem simple, slen- 
der, terete, 6’-18’ high. Leaves obovate, obtuse or 
the upper acute, narrowed at the base, faintly 5- 
nerved, 1/-3/ long, the lower much smaller; flowers 
several in a terminal sessile cluster and sometimes also 
in the upper axils, nearly 2’ long, 2-bracteolate under 
the calyx; calyx-lobes unequal, linear, longer than 
the tube; corolla greenish white, striped within, ob- 
ong-funnelform, open, its lobes triangular-ovate or 
ovate-lanceolate, erect, much longer than the oblique 
entire or 1-2-toothed appendages; seeds oval, wingless. 
In shaded places, southern New Jersey and Pennsylva- 
nia to Florida and Louisiana. Sept.-Nov. 
16. Gentiana Porphyrio J. F. Gmel. One- 
flowered Gentian. (Fig. 2881.) 
Gentiana purpurea Walt. Fl. Car. 109, 1788. Not L. 1753. 
Gentiana Porphyrio J. F. Gmel. Syst. 2: 462. 1791. 
Gentiana angustifolia Michx. Fl. Bor. Am. 1:177, 1803. 
Perennial, glabrous; stem erect or ascending, simple or 
branched, 6’—18’ high. Leaves linear, firm, acute or 
blunt at the apex, 1-2’ long, 1’’-2/’ wide, or the upper 
and lower shorter; flowers solitary at the ends of the 
stem or branches, short-peduncled, about 2’ high; calyx- 
lobes linear, longer than the tube; corolla funnelform, 
bright blue, sometimes brown-dotted within, its lobes 
ovate, acutish, spreading, 5’/-7’’ long, three times as long 
as the conspicuously laciniate appendages, or more; 
seeds oblong, wingless. 
In moist pine barrens, southern New Jersey to Florida. 
Aug.-—Oct. 
5. PLEUROGYNE Eschol. Linnaea, 1: 187. 1825. 
Slender usually branched annual glabrous herbs, with opposite leaves, and rather large 
flowers in terminal narrow racemes or panicles, or solitary at the ends of the slender pedun- 
cles. Calyx deeply 4-5-parted; segments narrow, often unequal. Corolla rotate, 4-5-parted; 
lobes ovate or lanceolate, convolute, acute, with a pair of narrow appendages at the base. 
Stamens 4 or 5, inserted on the corolla-tube; filaments slender or filiform; anthers ovate, 
sagittate, straight. Ovary 1-celled; ovules numerous; style none; stigma decurrent along 
the sutures of the ovary. Capsule 2-valved. Seeds small and numerous. [Greek, referring 
to the lateral stigmatic surfaces. ] 
About 7 species, of the colder parts of the northern hemisphere, the following in North America. 
Leaves linear or lanceolate; sepals linear. 1. P. rofata. 
Leaves spatulate or lanceolate; sepals ovate to lanceolate. 
2. P. Carinthiaca. 
1. Pleurogyne rotata(L.) Griseb. Pleurogyne. 
(Fig. 2882.) 
Swertia rotata 1. Sp. Pl. 226. 1753. 
Pleurogyne rotata Griseb. Gent. 309. 1839. 
Stem erect, usually 6’-15’ high, sometimes lower, sim- 
ple, or with nearly erect branches. Leaves linear to lan- 
ceolate, 14’-2’ long, 1’’-2’’ wide, or the basal spatulate 
or oblong, shorter and sometimes broader; sepals nar- 
rowly linear, or linear-lanceolate, about the length of the 
lanceolate to oblong-lanceolate corolla-segments which 
are 4’’-6’’ long; capsule narrowly oblong. 
Greenland and Labrador to Alaska, south in the Rocky 
Mountains to Colorado. Also in Europe and Asia. Summer. 
