PAPERS ON GENTIANE. 479 
lobes; in that respect near G. campestris, but very different otherwise, and, like G. tenwis, a connecting link between 
Grisebach’s Amarellz and Arctophile. — Pl. VIII., Fig. 1. One of the largest specimens ; 2, a single flower; 3, calyx, 
spread out ; 4, corolla, laid open ; 5, pistil Fig. 2-5, 4 times magnified. 
GENTIANA (ARCTOPHILA) 
4, 
lis, imis spatulatis obtusis, su- 
perioribus e basi latiore sessili SY 
lanceolatis 3-5-nerviis obtusi- x 
usculis, summis acutis ; cyma 
<4 
fe 
contracta thyrsiformi; calycis 
membranacei truncati latera- <7) | 
liter fissi spathacei lobis herba- 
ceis linearibus tubo suo multo \ 
brevioribus corolle tubum di- 
midium fere attingentibus ; 
corolle laciniis ovato-lanceo- 
latis acutiusculis tubo angusto 
sensim dilatato basi glandu- 
ifero bis brevioribus basi bre- 
iter barbatis vel nudiusculis ; 
ovario capsulaque lineari-lan- 
ceolata subsessili. 
Mountains of Llanos in the 
State of Chihuahua, 7,000- 
8,000 feet high, in pine woods; 
flowers in October; Dr. A. 
Wislizenus, 1846.— Stems 10— 
12 inches high, strictly erect ; 
leaves 1-1} inches long, 3-4 
lines wide at base; calyx 2 
lines long, slit to the base ; 
pale bluish corolla, 5 lines 
long, with 5 strongly 
marked glands near the [216] 
base ; throat naked, or 
usually with an irregularly 
dentate or ciliate membrane at 
the base of each lobe; seeds 
oval, rounded, 0.2 line long. — 
is not found in any other al- 
lied species, though not rare 
in the sections Pneumonan- 
caudice perenni tunicato 1-2- 
caulis, humilis, glaberrima, 
uniflora; foliis carnosulis ob- 
tusis margine tenuissime car- 
tilagineo-crenulatis, infimis li- Puate VII. — GenTIANA WISLIZENI. 
neari-oblongis in petiolum basi ‘ 2 . 
vaginantem attenuatis, caulinis paucis linearibus basi connatis, inferioribus 2 elongatis basi attenuatis, sammis 2-4 basi 
latiore fi bsessilem fere invol tib is tri 
utis ; calycis 4-fidi lobis triangulato-lanceolatis tubo suo vix longioribus 
