* * Styles naked, not exserted in fr u it (leaves not lyrate).
10. G. Rossii (Seringe) : scape 1-flowered, slightly pubescent above,
somewhat 2-leaved; radical leaves interruptedly pinnate, rather glabrous,
minutely ciliate; leaflets ovate or cuneiform, 2-3-lobed or entire; petals
roundish, longer than the ovate segments of the calyx (the veins all distinct);
carpels minutely hirsute; styles not exserted in fruit, glabrous.—DC. prodr.
2. p. 553. Sieversia Rossii, R. B r .! in Parry’s 1st voy. appx. p. 276, t . C.;
Chant, Sf Schlecht.! 1. c .; Hook.! 1. c. Poteniilla nivalis, Torr. ! in ann.
lye. New York, 1. p. 32, t. 3, f . 2.
0. more pubescent, almost silky when young, somewhat larger; leaflets
more numerous and crowded; scape sometimes 2-flowered.—S. humilis,
R. Br. ! 1. c./ (without a description); Cham. 8f Schlecht.! 1. c. Geum tri-
florum, Torr.! in ann. lyc. New York, 2. p. 195.
Melville Island, Mr. James Ross ! Capt. Parry! Sfc. On James’ Peak
of the Rocky Mountains, about lat. 42° (at an elevation of 10,000 feet), Dr.
James! Also Bay of St. Lawrence, Chamisso! 0. Unalasehka, Mr. Nelson!
Chamisso! Rocky Mountains, Dr. James!—The specimen of Dr.
James, on which Potentilla nivalis, Torr. was founded, differs from the
Sieversia Rossii, R. Br. from Melville Island only in the more numerous
and crowded leaflets, which are a little more strongly ciliate : the
scape is scarcely 3 inches high. A larger specimen, collected by Dr.
James, probably in a less elevated region, is about, 5 inches high, with
more pubescent leaves and a 2-flowered scape, and is nearly intermediate
between the former plant and the Sieversia humilis from Unalasehka. The
pedicel of each flower bears a bract near the middle, resembling the cau-
line bracteiform leaves, and consisting, like them, of a small incised lamina
with the stipules adnate to its base. Petals yellow. Calyx obconie and
hairy at the base.
* * * Styles partly exserted in fr u it, hairy below the middle: radicle leaves
lyrate: the terminal leaflet large and dilated, radiately veined; the lateral
few and minute or wanting.
11. G. Peckii (Pursh): nearly glabrous; scape paniculately branched
above, several-flowered, scarcely leafy ; radical leaves lyrately pinnate; the
terminal leaflet very large, roundish-reniform, somewhat truncate at the base,
crenately toothed and somewhat incised ; the lateral ones minute ; peduncles
and calyx clothed with a minute soft pubescence ; petals broadly oBovate;
twice the length of the ovate-triangular calyx-segments; bracteoles minute;
styles in fruit about twice the length-of the calyx, hairy towards the base.
—Pursh ! Jl. 1. p. 352 : Bigel. ! jl. Bost. ed. 2. p. 208 ; DC. ! prodr. J .p .
554. Sieversia Peckii, R. Br. ! in Parry's 1st voy. appx. p. 276 ; Hook.!
hot. mag. t. 2863.
On the White Mountains of New Hampshire ! where it was discovered
by the late Prof. Peck of Harvard University. July.—Scape 12-18 inches
high (4-5 inches, ex Bigelow), furnished with 3 or 4 small and sessile incised
leaves, about 4-flowered. Terminal leaflet of the radical leaves often 4-5
inches in width. Flowers as large as those of G. montanum. 12
12. G. radialum (Michx.): very hirsute or hispid; scape leafy, panicu-
culately branched at the summit, many- (5-10-) flowered; radical leaves
lyrately pinnate; the terminal leaflet very large, broadly reniform, with an
open sinus, incisely doubly toothed and somewhat lobed; lateral leaflets few
and minute ; cauline leaves (4-6), sessile, laciniate-toothed; petals deeply
obcordate, longer than the triangular calyx-segments; bracteoles minute;
styles in fruit nqt twice the length of the hirsute calyx, hairy at the base.
—Michx. ! ft. 1. p. 300 ; Ell. sk. 1. p . 573. Sieversia radiata, R. Br. 1. c.,
not of Hook.
On the Roan Mountain, N. Carolina, Michaux! Mr. Curtis! July.
—Abundantly distinct from the allied species of the N. W. Coast, with
which Pursh and some succeeding botanists have confounded it. Apparently
1-2 feet high. Leaves hispid on the veins beneath, at length almost glabrous
above. Pubescence of the peduncles Sec. of hirsute and downy hairs
intermixed. Flowers large. Petals broadly and deeply obcordate, yellow,
with a fulvous spot at the base. Carpels hirsute, as in the allied species, and
also the base of the style.—Mr. Curtis has rediscovered this interesting plant
in the same locality where (as appears from his herbarium) Michaux had
collected it about 40 years before.
13. G. calthifolium ’ (Smith) : hirsute-pubescent; scape simple, 1-3-
leaved, 1-4-flowered ; leaves lyrately pinnate; the lateral leaflets few and
minute, or often none ; terminal leaflet cordate-orbicular, with a deep and
narrow sinus, crenately doubly toothed or somewhat incised ; the cauline
leaves small, sessile ; petals obovate, emarginate or slightly obcordate, longer
than the ovate-triangular calyx-segments; bracteoles small; styles in
fruit about twice the length of the hairy calyx, hairy except near the summit.
—G. Oamtschaticum, Pallas ! in herh. Lamh. Spc. G. radiatum, Pursh !
1. c. not of Michx. Sieversia rotundifolia, Cham. Sf Schlecht. ! in Linncea,
2. p. 4. S. radiata, Hook.! jl. Bor.-Am. 1. p. 177, not of R. Br.
a. dilatatum: less hairy ; leaves somewhat reniform, the sinus either open
or closed, rather evenly doubly crenate ; the segments of the calyx lanceo-
lat®rQvatet, entire.—G. calthifolipm, Smith! in Rees, cyclop.; DC. 1. c.
Sieversia dilatata, R. B r .! 1. c, (without a character.) S. calthifolia, D.
Don !. in herb. Lamb.
0. rotundifolium : more hirsute ; leaves nearly orbicular, with the deep
sinus closed, incisely dentate-crenate; segments of the calyx oftep with 2
small lateral teeth.—G. rotundifolium, Langsd. | in DC. 1. c. Sieversia
rotundifolia, D. Don ! in herb. Lamb.
y. congestum: dwarf, more hirsute.—Sieversia congests, R. Br. ! 1. c.
(without a character.)
North West Coast, Unalasehka, Sec., Pallas ! Langsdorff! Mehzies !
Chamisso ! Mertens ! Mr. Nelson ! Mr. Tolmie ! —Caudex creeping or
prostrate. Scapes 3-8 inches high, ascending at the base or erect, slender :
the cauline leaves clasping. Flowers as large as in G. montanum, yellow.
—We have examined, in different herbaria, many specimens apparently
wholly intermediate between these three varieties of what we consider a single
species; and Pallas, Chamisso, and Hooker seem to have adopted the
same view.
X Doubtful Species.
14. G. dliatum (Pursh) : pubescent; stem simple; leaves rather glabrous,
ciliate, the lower ones pinnate, the cauline pinnatifid, the uppermost palmate ;
segments linear, incised; flowers somewhat corymbose. Pursh, jl. 1.
p. 352.
Banks of the Kooskoosky, Lewis. An elegant species ; flowers resembling
those of G. rivale. Pursh.—We do not find this species in Pursh’s proper
herbarium, but in his Canadian herbarium, formed subsequently to the publication
of his Flora, this name is applied to a specimen of G. triflorum.—In
Hooker’s Flora, this species is by a typographical mistake introduced under
the name of G. pubescens.