OF ARTS AND SCIENCES. 65 



P. obscura var. viscido-puhescens Michx. 1. c. P. hirsuta & P. pubes- 

 cens Dun. 1. c. — Corolla small. 



P. FtETENS Poir., or at least of Nees and of Dunal, comes here, and 

 in the size of the corolla, &c., resembles the next; but it is more glan- 

 dular, has shorter i^edicels and blue or bluish anthers, and, it is said, an 

 annual root. 



-t-i- Perennes : antheras sajjiissime luteal. 



9. P. ViRGiNiCA Mill. Graveolens, viscido-villosa, 1-2-pedalis e 

 surculis filiformibus repentibus ; foliis ovatis seu ovato-oblongis subcor- 

 datisve sajpius acutis ; pedicellis sa?pe pollicaribus calycem fructus raro 

 a?quantibus ; corolla expansa fere pollicem diametro. — jMill. Diet. & 

 Fig. t. 206. P. heterophylla Nees. P. heterophylla, nyctaginea, & 

 viscido-puhescens (excl. syn.) Dun. in DC. I.e. P. viscosa Gray, 

 Man., non Linn. Upper Canada to Florida and Texas. 



Var. AMBiGUA : forma major, eximie hirto-villosa; antheris viola- 

 ceis. — Wisconsin, Lapham, to Upper iNIissouri River, Suckley, and 

 Lake Winnipeg, Bourgeau (no. 1). Two or three other perennial 

 species have anthers varying to bluish or violet. 



10. P. HKDEUiEFOLiA. Odore baud ingrato redolens, spithamcea 

 ad pedalem e caudice stepius crasso, crebre viscido-pubescens, scepe in 

 novellis villosa ; foliis rotundato-cordatis nunc subrenifoi-mibus nunc 

 fere ovatis grosse parceque angulato-dentatis (semi- ad sesquipollicem 

 diametro) ; pedicellis (lin. 2-4 longis) flore fructuque brevioribus ; 

 corolla semipollicem diametro. — P. Alkekengi? var. digitalifoUa (vix 

 Dun.) & P. mollis, pro parte, Torr. 1. c. Rocky hills, &c., New Mex- 

 ico, 8. W. Texas, Arizona, and adjacent parts of Mexico. This is 

 Wright's no. 528 in j^art, 1597, and 1600, the latter numbers referred 

 by Dr. Torrey to P. mollis Nutt., which is a stellate-downy species. 



Var. rL'DEiiuLA, differt pube brevi densiore subglaudulifera vix 

 viscida, caulibus mox decumbentibus. — Western borders of Texas, 

 Wright, no 528, in part. 



-I- -)- -I- Perennes, sajpius humiles, baud viscidce : antherae luteas, in 

 paucis quandoque violaceo sufFuste. 



•M- Aut glaberrimoB aut cinereo-puberulenta?, pube nunquam stellulata : 

 folia crassiuscula basi lata vel cordata : pedicelli elongati filiformes : 

 corolla luteola concolor. 



11. P. GLABRA Bcnth. Bot. Sulph. p. 39. Known only from 

 Lower California : distinguished by being glabrous even to the calyx, 

 and the leaves inclined to hastate-lanceolate. 



VOL. X. (X. S. II.) 5 



