336 Plants of the Rochy Mountains— Supplement III 



C. TENUIFLORA, Beiuh., V\. Hartw. No. 191, as Bentham intimates, 

 should probably include C. longijlora, Kunze, and C. canescens, Beiith., 

 (which is Gregg's No. 434, 610, and Coulter's No. 1354), all from Mexico. 



C. Orizaba I have not seen, unless Coulter's No. 1352 and 1353 be- 

 long to it. 



C. nssiFOLiA, Linn. f. (No. 835, coll. Venezuel. Fendler). To this 

 Weddell refers all the five other South American species of this section, 

 including even C. integrifolia, Linn. f. 



C. LAXA, Gray in Bot. Mex. Bound., p. 119, of Arizona (coll. C.Wright, 

 No. 1490), has a broader calyx and corolla than any of its allies, the for- 

 mer very thin-tnembrHnaceous, colored, and with obtuse teeth, the galea 

 slightly falcate ; the leaves thin and not dilated at the insertion. 



§ 2. EUCHROMA (inch Callkhnma). Calyx antice et postice fissus, 

 segmentis integris eraarginatis vel bifidis. 



I liave nothing to say of the six Mexican and South American species 

 m the Prodromus. The proper North American ones I understand as 



♦ Radice annua vel bienni. 

 -t~ Integrifolioe. 

 C. AFFisis, Hook. & Arn. Folia lineari seu lanceolato-attenuata, flo- 

 raha raro trifida : flores pi. m. pedicellati : calyx usque ad medium bifidus, 

 segmentis angustis saepius biHdis vel emarginatis : galea elongata falcata; 

 labium brevissimum.— The calyx is generally cylindrical, more or less 

 curved, and reddish, and the wholly exserted galea 6 to 8 lines long: bat 

 the species, I believe, passes by regular gradations into the 



Van MINOR, Gray in Bot. Mex, Bound., p. 119 (Euchroma simplex snd 

 E, lanceolata, Nutt. in herb. Acad. Philad.), which has smaller flowers, 

 less colored floral leaves, a green and herbaceous calvx the galea of the 

 pale corolla only three or four lines long. Hartweg's No. ] 877 is a good 

 intermediate form. The calyx in both forms (as I have elsewhere noted) 

 varies with its segments deeply bifid, moderately bidentate, or entire. 

 C. iNDivisA, Engelm. Folia caulina lineari-lanceolata, floralia obr^ 

 dilatata rarius sublobata : flores pessile.s : calycis segraenta lata - 

 emargmata; galea brevis breviter exserta. I have not the means ci- 

 ting this with C. lithospermoides. 



-t--t~ LadniatlfoUce. 

 C. cocciKEA, Spreng. The only annual, or perhaps biennial, species 

 with kcmiately cleft leaves; confined to North America east of tne 

 Rocky Mountains, and mostly east of the great plains, ranging from Ru- 

 pert's Land to Texas. 



# * Radice perenni. 

 -^ Foliis fioralibus superne pi m. dilatatis et coloratis. 

 •^ Villosopubentes, vel infeme glabroe, pube versus apicem caulis, etc., 

 patente pilosa vel hirsuia stepius viscosa. 



C PARviFLORA, Bongard. Fere undique piloso-pubescens vel birsuta, 

 IX hispida: folia pleraque trifida vel pinnato-laciniata, floralibus apice 

 ^pissime rubro-colorata: calycis segmenta aut emarginato-biloba, aut 

 . linearibus : corolla labium brevissifflum. 



