Rydberg : Rocky Mountain flora lol 



viz. : the original P. acnniiiiatits Dougl. and my P. cvatlioplionis ; 

 and two with' lanceolate upper leaves, viz. : P. Fcudlcri A. Gray 

 and the original P. scanidijfonis Benth. Freniont'.s plant, the 

 type of the latter, is in the Torrey herbarium. On the sheet is 

 written in Dr. Gray's own handwriting : " This is only P. acuiiii- 

 natus, Dougl. ; small. A. G. 1862." Dr. Gray afterwards trans- 

 ferred the name P. scciDuiiflonis to' an entirely different plant, 

 describing it in the Synoptical Flora. This therefore needs a 

 new name. 



Pentstemon angustifolius caudatus (Heller) Rydb. 

 Pciitstcmon caiidatus Heller, Alinn. Bot. Stud. 2: 34. i8q8. 



P. caudatus Heller is in my opinion the southern more luxuri- 

 ant and broad-lea\'ed form of /'. angustifolius. The two grade 

 absolutely into each other in Colorado. 



Pentstemon trichander (A. Gray) Rydb. 

 Pcntstcuioii harbatus trichander h. Gray, Proc. Am. Acad, ii : 94. 



1876. 



This, as well as P. Torrcyi Benth., I think should be kept dis- 

 tinct from P. barbatus (Cav.) Nutt. of Mexico. 



MYZORRHIZA Phil. Linnaea 29: 36. 1857. 

 The NoTHAPHYLLON Subgenus of Af'liylloii as limited in Gray's 

 Synoptical Flora has been shifted back and forth between the genera 

 Pliclipaca, AnoplantJius and Aphyilon, and has lately been restored 

 to Orobaiichc, where its original species were described. The typical 

 species of Orobanclic have a bilabiate calyx, while the species here 

 discussed have a 5-parted one. As far as I find, the only genus 

 described to which they can be referred is the one given above. 

 The following two species are found in Colorado : 



Myzorrhiza ludoviciana (Nutt.) Rydb. 

 Orobancltc ludo7'iciana^n\X. Gen. Am. 2: 58. 18 18. 

 Apliyllon ludovicianuni A. Gray, Bot. Calif. I : 585. 1876. 



Myzorrhiza multiflora (Nutt.) Rydb. 

 OrobancJic multiflora Nutt. Jour. Acad. Nat. Sci. Phila. II. I : 



179. 1848. 

 ApJiyllon uiultifloruui A. Gray, Bot. Calif. I : 585. 1876. 



