oor, 1899. ALPINE ZONE. 07 
PLANTS OF HUDSONIAN ZONE—continued, 
(2) Species restricted to Hudsonian :one—Continued, 
Epilobium pringleanuin. Pentstemon elaber utahensis. 
Holodiseus discolor (typical form). Pentstemon new berryi. 
Juniperus nana, Phyllodoce enipetriformis. 
Kilmia glauca microphylla. Pinus albicaulis. 
Mimulus implexus. Potentilla flabellifolia. 
Mitella pentandra Potentilla pseundornpestris? 
Oreobroma triphylla, Sent: llaria nana. 
Orthocarpus pilosus. Tsuga mertensiana. 
Parnassia californica. Vaccinium ¢:espitosum. 
(3) Species common to Hudsonian and Canadian zones. 
{See p. 64.] 
(4) Species common to Hudsonian and Alpine zones. 
Agoseris monticola. Lutkea pectinata. 
Anteunaria media. Machivranthera shastensis, 
Arabi. platysperm.. Oreastrum alpiginum. 
Carex breweri. Pentstemon menziesi. 
Cheirantlus perennis. Phlox douglasi ditiusa. 
Chrysothammus bloomeri. Polygonum newherryi. 
Cymopterus terebinthinus, Polygonum shastense. 
Erigeron armeriefolium, Pulsatilla occidentalis. 
Eriogonum polypodum. Sibbaldia procumbens, 
Eriogouum pyrokefolium. Silene grayi. 
Hierneium albiflorum (alpine form). Sitanion cinerewn. 
Hieracium gracile. Spraguea umbellata. 
Hieracium horridum. Stieptanthus orhiculatus. 
Juncus parryi. Veronica cusicki. 
Ligusticum grayi. Viola purpurea. 
Lupinus ‘ornatus.’ 
ALPINE ZONE. 
The Alpine zone occupies the irregular belt of pumice and lava 
between timberline and the upper limit of plant growth. On the 
warmer southwesterly slopes its lower limit may be found at 9,500 to 
9,300 feet, but on ordinary slopes it is considerably lower. The great 
majority of its species stop at or below an altitude of 11,000 feet, but 
ou the relatively warm southwesterly slopes Hulsea nana was found at 
11,300 feet, and two species, Draba breiceri and Polemoninm pulchellum, 
as high as 13,000 feet—the extreme limit of plant growth on shasta. 
MAMMALS OF ALPINE ZONE, 
(1) Species known to occur in Alpine zone on Shasta, 
Canis lestes.! Phevacomys orophilus. 
Microtus mordax. Thomomys monticola, 
Ovis canadensis. Vulpes macrourus, ! 
Peromyscus gambeli. 
(2) Species restricted to Alpine zone. 
None. 
'The coyote and fox range up into the Alpine zone, but do not breed above the 
Hudsonian and possibly not above the Canadian, 
