Plants of the Rocky Mountains — Supplemei 

 b. Foliis basi lata truncata sessilibus. 



grayish, 4-6 lines long, acutish, or often rounded at the end. 



Var. d. TRiCHOCALYX : erecta, parce ramosa, canescenti-hirsuta; fo- 

 liis lanceolatis seu lanceolato-oblongis sinuato-dentatis. Las Vejjas, New 

 Mexico, Dr. Wislizenus, No. 473.— This is no doubt Nuttall's (E. tricho- 

 calyx, Torr. & Gr. Fl. 1. c, the specific identity of which with (E. albi- 

 caulis Prof. Gray has already indicated. The long hair on the stem, ovary, 

 and especially the calyx, consists of a single cell, remarkably broad at 

 base, tapering to an acute point; — it is however the form of hair I find 

 in all long-haired CEnotherce. g. e. 



Supplement III. — Revision of the genus Castilleia ; by A. Gray. 

 CASTILLEIA, Liun. f. 



The species of this genus are most troublesome and unsatisfactory, not 

 only on account of the difficulty of investigating the dried specimens, but 

 also from the variability of the characters which have been relied npon 

 in arranging them, and especially of the calyx. Although the latter af- 

 fords good charactei-s ou the whole, yet the degree of fission and the form 

 of the lobes are far from being constant in several species; and the same 

 remark applies in a measure to the relative length of the galea and of 

 the lower lip. The structure of the lower lip is likely to afford some good 

 characters ; but they are not readily nor very safely to be derived from 

 dried specimens. Bentham's four sections (in De CandoUe's Prodromus) 

 do not prove to be as distinct as they would seem. The second and the 

 third were better combined into one, which will include all our North 

 American species but two. The fourth section is pretty well marked, but 

 not absolutelv. Of the first, which would appear to be quite distinct, I 

 nave no specimens. Beginning with Bentham's fourth section, smce this 

 comprises the original species : — 



§ 1. HEMICHKOMA or EUCASTILLEIA. Calyx (saepe incurvus) 

 antice profunde fissus, postice leviter bifidus siepius 4-dentatus. 



C. LiNARi^FOLiA, Benth., is one of the best characterized and the 

 aiost northern species. It is known by its long, narrow and glabrous 

 cauline leaves which are not dilated at the base, the floral ones scarlet- 

 colored, by the subulate teeth of the calyx, and by the long and narrow 

 galea, which is more slender and falcate than in C. tenmfiora ; the lobes 

 of the lower lip linear-subulate. But the flowers are not always sessile, 

 »or the leaves only one-nerved and entire; these are often 3-cleft or 3- 

 Paned, and more or less distinctly 3-nerved at the base. To this species 

 plearly belongs G.falgeu., Nutt. in herb. Philad., and C. ca»<f«« Durand 

 '« Pacif. R. R. Rep. 5. p. 12. (But No. 70 of the Cal.forn.an (Fort Te- 

 Jon) collection of Xantus, also specimens collected by Dr Newberry in the 

 Colorado expedition which I had mistaken for C. candens, belong to C. 

 ''ffinis). This is No. 583 of Fendler's New Mexican collection, and 246 

 ^^ Df. Parry's Rocky Mountain collection. 



