C6 PROCEEDINGS OF THE AMERICAN ACADEMY 



12. P. CRASSiFOLiA Bentli. 1. c. Pube miniraa simplici quasi prui- 

 nosa; foliis (semi-sesquipoll.) ovatis cordatisve; corolla semi poUicari. — 

 P. cardiophylla Ton*. 1. c. (forma foliis plerumque majoribus cordatis) 

 &, in Ives, Colorad. Exped. Arizona to Lower California. 



++ ++ Pube molli stellata vel ramosa cinerascentes vel canescentes : 

 folia pleraque cordata vel ovata basi abrupta : corolla discolor: calyx 

 fructus globoso-ovatus. 



13. P. Fendleri. Pube brevissima partim simplici partim ramosa 

 pruinoso-subcinerea, quandoque subglandulosa ; caulibus e caudice 

 crasso ramosis : foliis vix pollicaribus deltoideo-ovatis seu ovato-lance- 

 olatis vix cordatis scepius acutis margiue nunc uuduluto nunc sinuato- 

 dentato; pedicellis flore brevioribus ; corolla seinipoUicem diametro. — 

 P. mollis Torr, 1. c. pro parte. ' Rocks and plains of New Mexico, 

 Fendler (083), Wright (1599), Tliurber, Bigelow, and north to Ilue- 

 fano Mountains, Parry. 



14. P. MOLLIS Nutt. Pube molli multiramosa vel stellata saepius 

 implexa cinereo- vel canescenti-tomentosa ; foliis (1—2^ pollicaribus) 

 ovatis seu rotundato-cordatis obtusis (imis nunc obovatis) angulato-den- 

 tatis repandisve ; pedicellis filiformibus saspius elongatis; calyce fructus 

 plerumque ultrapollicari ; corolla lin. 8-10 diametro. — Trans. Amer. 

 Phil. Soc. ser. 2, 5, p. 194:; Torr. 1. c. pro parte. P. tomentosa Dun. 

 I.e. ? non Walt. Thickets and along streams, Arkansas River (Nuttall) 

 to Texas and adjacent part of Mexico. This is no. 241 of Drummond's 

 Texan collection, also 205, in a less canescent form, while E. Hall's 

 500 is a very soft and densely tomentose form. 



Var. ciNERASCENs. Pube parciori saipius breviore minus ramosa 

 sordescenti-cinerea ; foliis rotundatis vix unquam cordatis ; pedicellis 

 nunc hliformibus fructiferis ultrapollicaribus, nunc petiolo breviori- 

 bus. — P. Pennsylvanica, var. cinerascens Dun. iu DC. 1. c. p. 435. 

 Texas to Mexico. To this belongs Drummond's no. 175, E. Hall's 

 no. 502, &c. Also Coulter's Mexican no. 1222 iu part, the other por- 

 tion representing P. gracilis of Miers iu Ann. & Mag. Nat. Hist. & 

 111. S. Amer. 2, p. 28, t. 39.* 



* Two species were received by us under tliis number, similar in aspect, but 

 abundantly distinct : one, the plant above described ; the other, P. (jracilis 

 Miers (apparently the same as Ervendberg's no. 215), hirsute with simple-jointed 

 hairs, and in other respects also agreeing with the published character and 

 figure. It may be noted, however, that the character "filamentis brevissimis " 

 is contradicted both by the detailed description, "filaments are 3 lines long and 

 the anthers nearly 2 lines long," and by the plate. Keither the one nor tlie other 

 well accords with the specimen. 



