76 PROCEEDINGS OF THE ACADEMY OF 



512. E. petaloidea, Engelin., with the small-flowered form named E. polyclada 

 by Boissier. 513. E. Fendleri, Torr. and Gray; the inappendiculate form. 

 514. Ckoton (Hendecandra) muricatum, Nutt. 309. Tragia ramosa, Torr. 



CUPULIFERiE. 

 515. Quercus Douglasii, var. Neo-Mexicana, A. DC. 516. Corylus ros- 

 trata, Ait. 



BETULACE^I. 

 517. Betula glandulosa, Michx. "Subalpine." 518. B. paptracea, 

 Michx., var,, called B. alba, var. glutinosa inParry's Enumeration. 519. Alnus 

 viridis, Ait. 



SALICACEiE. 



520. Salix arctica, R. Br. 521. S. reticulata, L. This and the last are 

 high alpine species. 522. S. rostrata, Richards. (6\ vagans, Anders.) 

 523. S. glauca, L. " Subalpine." 524. S. cordata, Muhl., or vitellina, L. 

 525. Poptlus angustifolia, Torr. " Foot of the mountains." 526. P. bal- 

 samifera, L., var. candicans. "Subalpine; rather rare." 527. P. tremu- 

 loipe<, Michx. 



CONIFERiE. 



525. Pixus toxdeeosa, Dough ; Engelm. in Enum. PI. Parry, Suppl., p. 

 (39; 332. 529. P. flexilis, James ; Engelm., 1. c. 530. P. aristata, Engelm. 

 I.e. 531. P. contorta, Dough ; Engelm., 1. c. 532. P. edulis, Engelm. 533. 

 Abies Menziesii, Lindl. 534. A. Douglasii. Lindl. 



ORCHIDACE^S. 



535. Platantheea hyperborea, Lindl. 536. P. obtusata, Lindl. 537. 

 Calypso borealis, Salisb. 538. Cypripedium parviflorum, Salisb. 539. 

 Spieanthes gemmipaea, Lindl., from South Park, in the Rocky Mountains, 

 (and one or two specimens were collected by Dr. Parry on South Clear Creek, 

 July, No. 441) ; quite resembling the Irish plant in aspect and in the label- 

 lum, etc., but the sepals rather narrower and less blunt, mixed (in my set) 

 with taller specimens, from the plains, of a narrow-leaved form of S. cernua, 

 having very large nipple-shaped calli on the base of the labellum. The la- 

 beilum of the former, when flattened out, is in outline ovate or ovate-oblong, 

 with a narrowed subapical portion below the cordate-rotund erose-crisped 

 summit. The forms of 5. cornua, or the species allied to it, are thus far quite 

 inextricable. The present Rocky Mountain specimens are exceedingly inter- 

 esting, whether absolutely identical or not with the much-vexed and isolated 

 S. gemmipara. They have not the long-acuminate bracts of S. Roman, 

 zovlana, of which my specimens are too young to allow a comparison of the 

 Mowers. 



ALISMACE^E. 



540. Triglochin palustre, L. 541. T. maritimum, L. Both from the moun- 

 tains. 



IRIDACE^E. 



542. Iris tenax, Dough? "Subalpine, and at lower elevations ; common." 

 This, now collected in flower, we had in fruit, collected on the Laramie Moun- 

 tains by Dr. Hayden. and at Bridger's Pass by Mr. H. Engelmann. Thespathe 

 is more scarious and the capsules larger than in /. tenax. 



LILIACEiE, inch Smilaceje, Melaxtiiace^e, etc. 



543. Streptopus amplexifolius, DC. 544. Smilacina stellata, Desf. 

 545. Allium stellatum, Fraser. 546. A. Sch<enoprasum, L. 547. A. cer- 

 nuum, Roth. 548. Leucocrinum montanum, Nutt. 549. Calochortcs venus- 



[Mar. 



