124 GENTIAXACE^. Gentiana. 



open-f unnelfonn gi'eenish-white corolla, which is greenish-veiny and often purplish-striped 

 (and 1^ inches long) ; its lobes triangular-ovate and acute, much exceeding the triangular 

 oblique and entire or sparingly toothed appendages. — Gent. 35; Pursh, 1. c. ; Ell. Sk. i. 

 340; Griseb. 1. c. partly; Gray, Man. 1. c. G. Virginiana etc., Pluk. Aim. t. 186 (poor). 

 G. villosa, L. Spec, i. e. pi. Gronov., but it is glabrous. G. Saponaria, Walt. Car. 109, not L. 

 G. incarnata, Sims, Bot. Mag. 1. 1856. G. intermedia, Sims, Bot. Mag. t. 2303. G. serpentaria, 

 Raf. Ann. Nat. 13 1 — Dry or damp grounds, Pennsylvania to Florida and Louisiana. 

 ++ ++ Corolla more funnelform and with longer spreading lobes : anthers connivent but not con- 

 nected: flowers solitary on the stem or occasional branches, commonly pedimcled and naked. 

 G. angustif olia, Michx. Smooth : stems scattered, a span or two long, slender, ascend- 

 ing, commonly simple : leaves narrowly linear, thickish, an inch or two long, a line or two 

 wide ; the lower narrowed downward ; the uppermost smaller and sometimes forming bracts 

 to the flower: calyx-lobes resembling the uppermost narrow leaves, longer than the tube: 

 corolla 2 inches long, deep and brilliant azure-blue, somewhat brown-dotted within (also a 

 snow-white variety with a greenish hue outside) ; the lobes ovate, half inch long, widely 

 spreading in anthesis, much longer than the broad and conspicuous laciniate appendages : 

 seeds slender, wingless. — Fl. i. 177; Ell. 1. c. ; Chapra. Fl. 356. G. purpurea, Walt. Car. 

 109, not L. G. porphi/ris, Gmelin. G.frigida, var. Drummondii, Griseb. in DC. 1. c. Ill, the 

 white-flowered variety from Florida. — Low pine-barrens. New Jersey (not "Canada") to 

 Florida. A most beautiful species. 



6. PLEUROGYNE, Eschsch. (Formed of nX£VQ6v,f\h or side, and yvvri, 

 female ; from the remarkable stigmas, which, instead of terminating the ovary, 

 occupy the greater part of the length of the two sutures below its apex.) — Small 

 annuals of cold regions in the northern hemisphere, of three or four nearly related 

 species. Genus more related to Swertia than to Gentiana, the appendages to 

 the corolla, as in the former, adnate and apparently glandular at base. Liunasa, 

 i. 188 (1826). Lomatogonium, Braun in Flora, 1830, 221. 



P. rotata, Griseb. Stems 2 to 10 inches high, the smaller simpler and 1-flowcred ; the 

 larger either simple and racemosely several-flowered or fastigiately much branched : leaves 

 hnear or lanceolate, or the radical ones short and spatulate : sepals similar to the upper 

 leaves, in ours mostly narrowly linear ; the longer equalling the blue or whitish corolla : 

 lobes of the latter ovate becoming oblong-lanceolate, 4 or 5 lines long, bearing at base a 

 pair of glandular and scale-like processes : ovary and capsule linear-oblong or lanceolate, 

 nearly marginless. — Griseb. Gent. 309, & Hook. Fl. U. 65; DC. Prodr. ix. 122; Herder, 

 1. c. 181. Sivertia rotata, L. ; Pall. Fl. Ross. ii. t. 89, fig. 1, 2. Gentiana sulcata, Willd. Spec. 

 i. 1351. G. rotata, Froel., Bunge, &c. — Labrador and Hudson's Bay to the high north-west 

 coast, Kotzebue Sound, &c., and Rocky Mountains south to lat. 39° : in the latter always 

 the slender-leaved form, var. tenuifolia, Griseb. (Kamts. to Greenland.) 



P. Carinthiaca, Griseb. Low, few-flowered: leaves shorter and usually ovate: sepals 

 from ovate to oblong-lanceolate, much shorter than the corolla : ovary and capsule oblong- 

 ovate, distinctly margined. (Alps of Eu., east to N. E. Asia.) 



Var. pusiUa. Leaves lanceolate or spatulate : sepals oblong-lanceolate, after anthe- 

 sis becoming as long as the ovate corolla-lobes and the oblong-ovate capsule. — (Near var. 

 Stelleriana, Griseb., G. Stelleriana, Cham., Swertia rotata. Pall. 1. c. as to fig. 3 ; but leaves 

 not ovate, &c.) Swertia pusilla, Pursh, Fl. i. 101. Pletirojj/ne Purshii, Steud. Nom. — Lab- 

 rador and alpine region of the Wliite Mountains of New Hampshire, according to Pursh, 

 the latter station very doubtful. Riviere du Loup, E. Canada, Dr. Thomas. (Himalayas, 

 Lapland.) 



7. SWERTIA, L. {Emanuel Sweert, a German herbalist.) —The genuine 

 species are sim^jle-stemmed perennials, occasionally with alternate leaves, the 

 lower tapering at base into a margined petiole ; the inflorescence thyrsoid ; the 

 flowers blue, varying to white, in summer. . Seeds flat, commonly margined. 



S. perennis, L. A span to foot or more high : lowest leaves oblong or obovate-spatu- 

 late (2 to 4 inches long), tapering into a long petiole; upper cauliue few and narrower. 



