H ab. Alpine woods in the Rocky Mountains, north of the Smoking River, in latitude 56°, scarce.
Drummond. •
T ab. LXV. Potentilla Drummondii. Lehm. Fig. 1, Flowerj Jig. 2, Stamen:—magnified.
* * Foliis pinnato-digitatis.
12. P . diversifolia, (Lehm.); caule adscendente, foliis radicalibus pinnatis subtrijugis
quinatisque, caulinis bijugis digitatis ternatis, foliolis cuneiformibus supeme grosse inciso-
serratis apice sericeo-pilosis, stipulis ovato-lanceolatis integerrimis, petalis obcordatis calyce
longioribus.
Radix crassa, lignosa, fusca, supeme squamis, e rudimentis petiolorum stipularumque ortis tecta. Caules
ex eadem radice plures, adscendentes, 3-12-pollicares, teretes, purpurascentes, pilosi vel glabriusculi, in pani-
culam subdichotomam pauci-vel multifloram abeuntes. Folia radicalia longe petiolata, impari-pinnata, sub-
trijuga vel quinato-digitata, caulina breviter petiolata, bijuga, vel digitata et ternata. Foliola approximata,
sessilia, cuneiformia, lateralia saepe obliqua, supra glabriuscula impresse venosa, e medio ad apicem grosse
mciso-serrata, serraturis apice pilis densis longissimis albis, subtus plus minusve pilis longis sericeis instructa;
juniora subtus sericeo-villosa. Stipules ovato-lanceolate, subfalcate, acute, integerrinue, inferiores subtus
albido-pilosae, superiores glabriuscuke. Flores erecti, plus minusve longe pedicellati. PediceUi teretes,
graedes, subpurpurascentes, supeme praesertim tomentosi. Calyces pilosi, folia exteriora linearia acuta, in-
teriora lanceolata acuminata reliquis duplo majora. Corolla aurea, petalis obcordatis calyce’ duplo longioribus.
Receptaculum villosum: Acheniis lsevibus glaberrimis.
H ab. Alpine Prairies, as well as on the higher summits of the Rocky Mountains, between lat. 52° and
56°. Drummond. This is one of the Potentillas which presents the most varied modifications. The radical
leaves of one and the same plant are partly entirely pinnate, partly pedate or digitate; the leaflets either
very close together, or, less frequently, rather distant; and though the above-mentioned form of the leaflets
remains the predominating one, they nevertheless appear often a little longer or narrower, those beneath either
of the same length with the superior ones, or, more commonly, much smaller. The stem-leaves are found
varying in the same manner. The pubescence of the plant is also very variable; that of the stem so indistinct
that it appears at last almost entirely glabrous. The leaves offer all and every transitions from the
sericeous with long hairs to the glabrous state; but even in those whose surface is most glabrous, the
points of the segments are still covered with some sericeous hairs, such as are seen on P. aurea. The calyx
and petals, too, are never glabrous, and the pubescence in general does not depend on the size of the plant,
because both few and many-flowered ones are to be met with, exhibiting all the different forms in which this
plant is known to us. Another peculiarity may be mentioned, relating to the growth of this plant The
smallest specimens, perhaps from a dry and elevated spot, do not exceed two inches in height, and have but
a single stem-leaf and few flowers. From this form upwards to the height of one foot, with a panicle of
16-20 flowers, all intermediate ones may be seen. And indeed all the deviations now specified offer such
insensible transitions, that it is quite impossible to fix any where the limits of a variety. The size of the
flowers, however, (like those of P. subacaulis,) exhibits no variation at all: the stem, too, is always more
or less tinged with red.
13. P . pulcherrima, (Lehm.); caule adscendente villoso, foliis impari-pinnatis, foliolis
dense congestis ellipticis asqualiter serratis supra adpresse pilosis subtus niveo-tomentosis,
stipulis ovatis acutis integerrimis lanatis, petalis obcordatis calyce longioribus.
Radix fusca, lignosa, supeme squamis e petiolorum stipularumque rudimentis ortis tecta. Caules ut
videtur ex eadem radice plures, adscendentes, teretes, sesquipedales et longiores, incano-villosi, subpurpurascentes,
in paniculam lax am desinentes. Folia radicalia 3-juga, longe petiolata, caulina bijuga et ternata,
breviter petiolata. Petioli supra profiinde canaliculati, lanati. Foliola sessilia ita quidem approximata ut
folium digitatum septenatumque constituere videantur, elliptica, eequaliter serrata, supra viridia adpresse
pilosa, subtus niveo-tomentosa, 1-3 pollices longa. Stipules ovato-lanceolate, acute, integerrinue, subtus
valde tomentosae. - Flores erecti, pedicellati. Calyces villosi: pilis patentibus, foliolis calycinis acuminatis
apice sphacelato-mucronulatis, exterioribus lineari-lanceolatis, reliquis lanceolatis paullo majoribus. Corolla
aurea, petalis obcordatis calyce longioribus. Receptaculum dense lanatum, pilis acheniis longioribus.
Hab. In the Prairies, as well as on dry banks, in the Rocky Mountains, between lat. 52° and 56°.
Drummond.
14. P . rubricaulis, (Lehm.); caule adscendente, foliis radicalibus pinnatis bijugis caulinis
ternatis, foliolis approximatis oblongis pinnatifido-serratis supra glabris subtus tomentosis,
stipulis integerrimis, petalis obcordatis ealyeem subsuperantibus, receptaculo glabriusculo.
Caules ex eadem radice. plures, subpedales, adscendentes, teretes, pubescentes, purpurascentes. Folia
radicalia impari-pinnata bijuga, caulina ternata. Foliola oblonga, pinnatifido-serrata, laciniis lineari-lanceolatis
obtusis, supra lsete viridia, glabra, subtus tomentosa, infima reliquis multo mindra 3-4-loba, terminale
maximum. Petioli pilosi, foliorum radicalium 2-3 pollices longi. Stipules ex ovato-lanceolate, subfalcate,
acute, integerrimse. Flores terminales, erecti, in paniculam subdichotomam dispositi. Pedicelli 1-2-polli-
cares, graciles, purpurei, pilosi Calyces pilosi, foliolis exterioribus sublinearibus obtusiusculis, interioribus
ovato-lanceolatis acutis, reliquis duplo majoribus. Petala obcordata, aurea, ealyeem subsuperantes. Recepta-
. culum glabriusculum: acheniis lsevibus.
Hab. About Bear Lake, in lat. 66°. Dr. Richardson.
15. P . pulchella; caulibus procumbentibus subunifloris, foliis pinnatis subbijugis subtus
sericeo-tomentosis, foliolis bi-trilobis vel linearibus integerrimis margine revolutis impari-
pinnatifido, stipulis vaginantibus, stylo basi glanduloso-dilatato.—Br. in Boss’s Voy. ed.
2. p. 193. Hook, in Parry’s 2d Voy. App. p . 395. De Cand. Prodr. v. 2. p . 582.
Caules ex eadem radice plures, procumbentes, teretes, purpurei, lf -3 pollices longi, basi glabri, versus
apicem densissime lanati. Folia radicalia impari-pinnata, subbijuga, foliola sessilia, margine revoluta, supra
viridia, pilosa, impresso-venosa, subtus sericeo-tomentosa, infima minima, sublinearia, obtusa, integerrima,
reliqua 2-3 lineas longa, bi- vel tri-loba, impari majore cuneato-obovato pinnatifido, laciniis oblongis vel
linearibus, obtusis. Folia caulina 1-2-juga, foliolis lineari-lanceolatis, integerrimis, interdum in folium unicorn
3—5-lobum confluentibus. Stipules ovate, caulem et pedicellos amplectentes, ocliream fere formantes.
Flores 1-2 terminales brevissime pedicellati, parvi. Calyx subtomentosus: foliolis marginatis, exterioribus
lanceolatis obtusis, interioribus ovatis, acutis, reliquis longioribus. ' Petala lutea obovata, laevissime emar-
ginata, venosa, longitudine calycis. Stylus erectus basi glanduloso-dilatatus. Receptaculum pubescenti-pilosum.
Hab. Islands of the Arctic Sea. Capt. Ross, Capt. Sir E. Parry, Capt. Sabine. Shores of the mainland
between the Coppermine and Mackenzie Rivers. Dr. Richardson.
* * * Foliis digitatis.
16. P . argentea; caule adscendente, foliis quinatis, foliolis cuneiformibus superne incisis
margine revolutis subtus candido-tomentosis, petalis retusis calyce longioribus. Lehm.—
Linn. Sp. PI. p. '712. Pursh, Fl. Am. v. 1. p. 355. JSFestl. Monogr. Pot. p. 48. Lehm.
Monogr. Pot. p . 94. Engl. Bot. t. 289. Bigel. Fl. Bost. ed. 2. p. 204. Torrey, FI. o f Un.
St. v. 1. p. 497.
Hab. Canada. Pursh.
17. P. opaca; caule decumbente filiformi, foliis infimis septenatis quinatisque, foliolis
lanceolate-cuneiformibus profunde serratis utrinque prolixe pilosis, petalis obcordatis