Gentiana,] GENTIANEiE. 



63 



obconico quadruple brevioribus.— Zaw. Enci/cL 2. p. 643. BoL Mag. t 3496.— G. quin- 

 quefolia. L. Sp. h p. 333.— G. amarelloides. Mich. 1, p. 177. Pursh, I. p. 186. 



Hab. Canada. Mrs.PercivaL^The specimens differ somewhat from the common form, in having blunt 

 leaves and a divaricating infloresence. 



18. G. tenuis (Griseb.); caule stricto subsimplici, foliis linearibus obtusis (mucronatis), 

 sepalis margine scaberrimis basi vix junctis in^equalibus longioribus tubum corolla fequan- 

 tibus, coroUae 4.fidae albid^ (?) lobis oblongis obtuslssimis mucronulatis tubo cylindrico 

 duplo brevioribus. (Tab. CLI.) 



Badix tenuis, descendens, ramosa. Caulis spithameus 1. pedalis. strictissimus, subsimplex. teretiuscu- 

 lus. a basi ad apicem jequaliter foliosus, basi rubicundus. Internodia ima semiuncialia, cetera uncialia, 

 hinc sesquiuncialia. Folia exacte linearia, basi latiuscula, apice rotundato mucronulato, 1. cuspidato, 1. 

 acuminato, obsolete trinervia, margine ad lentem creberrirae sermlata, obscure viridia, basi connato-am- 

 plexantia, (unciam longa, 1-1 f" lata.) Flores tenues, parvi. in axillis superioribus subsessiles, erecto-ap- 

 pressi: terminalis longius pedicellatus. Sepala lanceolata, acuminata. Corolla sicca albida, iufundibuli- 

 formi-hypocrateriformis. (5'" longa, 11-2'" lata.) Giandul<B inteT basin filamentorum. CapilH hinc 3-5 

 tenues in lobis corollse. Genitalia tubum aequantia. Antherm rotunda, incumbentes. Germen ellipticum. 

 stigraatibus parvulis vix revolutis. Capsula—f 



Hab. At the Mackenzie River. Cumberland House to Bear Lake. Dr. Richardson.— There is no 

 species of the least analogy with this in the group o£ ArctopJiilce, the appearance being exactly that of G, ■ 

 Amarella, or G. acuta; but as glands occur between the filaments, which have not been observed in the 

 group o£ EndotrichcB, and on the other hand, as there is seldom a trace of a beard in the corolla, it will 

 be more convenient to bring this species into this group, although it must be observed that it unites most 

 naturally with that of G. Amarella. Besides, it differs from the latter by the peculiar form of the leaves, 

 and of the lobes of the corolla. 



1 ^ 



Tab. ChL— Fig. 1, Flower;^^. 2, 'Pisiih-^magnijied. 



Sectio V. Endotricha, Bg.—Corolia plica intermedia destituta, egiandulosay hypocra- 

 teriformiSf corona Jimhriarum aucta. Stigmata distincta^ revoluta. Capsula sessiiis. 

 Semina giobosa, exalata. — Herbce annuce, 



19. G. tenella (Fries); caule basi ramoso, ramis nudis elongatis unifloris, sepalis obtusis 



duobus majoribus, corollse 4-f]dse tubo cylindrico lobos sub^quante.— Pm^, in Act. Hafn. 



10. p. 436,— G. glacialis. Thorn. App. VilL Delph. 1. App, 532.— G. dichotoma, PalL 

 Ross. 2. p. 110.— G. borealis. Bg. I. c. p. 257. t. 10. f. 2. 



r 



Hab. At Behring Strait, on the shore of the sea at Kotzebue's Sound. Chamisso.—Thls form is a foot 

 high, and very straight ; the sepala are almost as long as the corolla: on which differences Mr. Bunge 

 established his G. borealis. But the same appearance occurs not only in Norway, but sometimes also 

 in the Alps, and there is no constancy in these characters. 



20. G, acuta (Mich.); caule gracili erecto ramoso, foliis connato-vaginantibus, inferiori- 

 bus oblongo-spathulatis, superioribus oblongo-lanceolatis acutissimis, calyce sub^quali co- 

 rollam dimidiam vix sequanie.— Mich. Bor. Am. 1. p. 177— G, plebeja. Bg. L c. p. 250. 

 t. 9./ 5.— G. Amarella. \Richards. in Narrat. Lc.—^. striata, caule 2-4 pedali, racemis 

 axillaribus strictis elongatis erectis, calyce insequali, foliis aequalibus, floribus siccis flaves- 

 centibus. 



