Has. u. and /3. Canada to the Rocky Mountains and Slave Lake. Michaux, Dr.Richardson, Douglas,
Drummond.—The common appearance is much more slender than in the drawing of Mr. Bunge, the leaves
are narrower and the branches shorter; but the same form as that from Unalaschka occurs also in the
Rocky Mountains.
This species is extremely like our G. Amarella; it seems, however, to differ constantly in the way the
leaves embrace the stem. In G. Amarella the lamina of the two leaves ends at that point where they are
affixed to the stem, so that they are separated from each other by an interstice,formed by the stem; while
in G. acuta the bases of both leaves touch each other without any interstice, so that the substance of the
leaves itself is somewhat connate: this character seems to be invariable throughout all those numerous
forms in which these species are so rich; the upper leaves of G. acuta are, besides, always longer and
more acute, and the leaves near the root are more or less spathulate, while in G. Amarella the leaves are
always more equal in the same individual; the beard of G. acuta is longer and thinner, so as to disappear
almost wholly here and there; the flowers are somewhat smaller; the calyx is shorter and moré unequal;
the stem more angular, and commonly almost winged. Besides, most of its forms are much stiffer,
taller, and more branched; the stem often produces such slender and numerous branchlets from the under
axillse as has been mentioned above of G.propinqua.— G. acuta, Nutt., which has been doubtfully referred
to G. campestris, certainly is the species of Michaux, which seems the only one of Endotrichce
widely dispersed through the northern parts of the new continent, and the varieties of which are as manifold
as those of G. Amarella.
Sectio VI. Crossopetalum, Troel.—Corolla, plica intermedia destituta, glandulis inter
basin filainentorum aucta, lobi cüm tubo continui l. expansi margine fimbriati. Stigmata
lata orbiculata distincta. Capsula stipitata l. basi attenuata. Testa exalata aculeis mol-
libus tecta (l. rarius lavis.)—Herba annua et perennes.
21. G. detonsa (Fries.); caule stricto, pedunculis superne nudis, foliis oblongo-lanceo-
latis linearibusque basi attenuatis, corollas lobis tubum submquantibus oblongis rotundatis
margine versus apicem serratis medio ciliato-pectinatis basi integerrimis, seminibus acule-
atis.—Fries, in Act. Hafn. 1. c. t. 1. f . 3.—G. bracbypetala. Bg. 1. c. p. 225. t. 11. ƒ.3.
{specimen deftoratum.)—G. ciliata. Gunn. Norv. 2. p. 88. t. 2.f . 3-5.—G. serrata. Gunn.
2. p. 101. (forma cor. 5-fida.) FI. Dan. 317.—(3. barbata, radice bienni, caule erecto ra-
moso, foliis caulinis longissime acuminatis, corolla duplo majori, stigmatibus ovario obovato
impositis (in planta sibirica; in americana plerumque ovarium ellipticum et stylus con-
spicuus.)—G. barbata. Froel.p. 114. Sims, Bot. Mag. t. 639.—G. ciliata. Pall. Boss. 2.
t. 92. f. 2.—y. simplex, radice bienni, caule simplici unifloro gracillimo superne nudo, corolla
ut in (3., foliis imis lineari-spathulatis, superioribus linearibus. G. barbata, simplex.
Bg. 1. c. p. 224. t. 9. f 1.—G. intermedia. Bichards. ms.
H ab. Huron Lake. Dr. Todd. Slave Lake, passing into /3. Dr. Richardson. Edmonton House to
Carlton House on the Saskatchawan. Mr. Drummond. Arctic sea-shore. Dr. Richardson.—/3. Canada.
Mrs. Percival, Mr. Sheppard. Huron Lake. Dr. Todd. Banks of the Maitland River. Mr.Js.Macnab.
Cumberland House to Bear Lake. Dr. Richardson. Saskatchawan and Rocky Mountains,:—with forms
passing into a. and /3. Mr. Drummond.—The name given by Fries is the oldest one for this polymorphous
species: the variety, which has been nicely drawn by Mr. Bunge, proving that there are no certain limits
between G. barbata, Froel. of the Altai, and G. detonsa, Fries, of the Arctic Zone and Lapland. This was
the more clearly shown by the large collection of American specimens which I have been able to examine:
even the shape of the ovarium, which I considered before to afford constant characters, is here not less fallible
than the regularity or irregularity of the calyx, as well as the large size of the flower. It seems to
depend upon the nature of the locality, whether the root be biennial or annual.—Ihe American G. barbata
differs somewhat from the Altaic form, by the lower leaves being more blunt, and by having a distinct
style and nearly equal calyx. Though these characters are by no means constant, one may form, on
these grounds, an American variety ; but we find, here and there, specimens which are quite identical with
some Siberian ones: besides, the variety /3. occurs in both countries.
22. G. crinita (Froel.); caule stricto multifloro folioso, foliis cordato-lanceolatis, pedunculis
superne nudis elongatis, corollas lobis oblongis rotundatis margine fimbriatis, fimbriis
deorsum longioribus basi loborum nullis, ovario ovato-lanceolato, seminibus aculeolatis.
Froel.p. 112. Pursh, 1. p. 188. Beck, p. 240. Bot. Mag. t. 2031.—G. fimbriata. Andr.
Bot. Bepos. t. 509.—G. ciliata, Americana. L.
Hab. Canada. Mr. Goldie.—This is widely dispersed throughout the United States.
23. G. ventricosa (Griseb.); caule stricto gracili, foliis caulinis ovato-oblongis obtusis,
calyce inasquali alato ventricoso corollam involvente, corollae lobis asqualiter crenato-fim-
briatis. (Tab. CLII.)
Radix annua, tenuis, ramosa. Caulis pedalis, strictus, glaber, teres, striatus, prater ramos quosdam
insequales unifloros secundos simplex, superne gracilis. Intemodia ima uncialia, cetera sensim longiora,
2-8-uncialia. Folia margine ad lentem tenuissime scabrida, ima rosulata obovato-subrotunda 1. obovato-
oblonga, in petiolum attenuata, (4-6"' longa,) caulina ovato-oblonga obtusa, (unciam longa, 4"'-6"' lata.)
Rami peduneulares, flexuosi, simplices, uno pari foliorum a flore remoto instruct-!; pedunculus terminalis
1 florus, ebracteatus, (3—4 uncialis.) Calyx clausus, ovoideus, (9'" longus, 4—5'" latus,) acuminatus, corollam
tertia parte superans, lobis tubum eequantibus, binis lanceolatis acuminatissimis longe mucronatis, binis
ovatis acuminatis paullo minoribus latius alatis (aim per sepala; cetera per scariosam membranam intra-
calycinam formantur.) Corolla inclusa, convoluta, 4-fida, lobis ovato-oblongis, tubum sensim ampliatum
sequantibus, elegantissime cequaliter crenato-fimbriatis, obtusis. Filamenta brevissima (1—2'" longa,) lata,
membranacea, sub apice tubi inserta. Antherce ex tubo exsertm, introrsm, loculis basi distantibus extror-
sum connectivo membranaceo cum filamento contiguo junctis. Ovarium elliptico-oblongum, stamina paul-
lum superans, stylo nullo, stigmatibus orbiculatis 2-lamellatis. Capsula ignota.
Hab. Grand Rapids of the Saskatchawan. Between Cumberland House and Hudson’s Bay.
Drummond.—One of the most remarkable species: the appearance is exactly like G. utriculosa, but from
the structure of the flower, it is nearest G. detonsa.
T a b . CLII.—Fig. 1, Flower; jfr?. 2, Corolla; fig. 3, Corolla laid open;j?<7S. 4,5, Back and front view of a stamen;fig. 6, Section of a calyx:—magnified.
2. PLEUROGYNE. E schscholz. ap. Cham. Linncea, 1. p. 190.
Fovece epipetalae glanduliferae 0. Filamenta basi sequalia. Stigmata latevalia (ad sutu-
ras valvularum decurrentia.) Capsula unilocularis. Corolla rotata, corona fimbriarum
brevissima aucta.
1. P. rotata (L. sub Sweriia); foliis lanceolatis linearibusque, calycis lobis lanceolato-
linearibus corollam sequantibus, ovario acuto, seminibus suturae valvularum insertis.—L.
Sp. PI. 1. p. 328. Pallas, 2. p. 98. (excl. synon. et fig. HI.) t. 89 .f . 1. 2.— Gentiana rotata.
Froel. p. 105. ex descriptions (exclus. synon. et var. 13.)—Swertia sulcata. Fries, l. c.
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