406 SUPPLEMENT. 



flowers mostly numerous and crowded in the clusters, slender-pedicelled : calyx small, 

 5-parted, only one line and the whitish or violet-tinged corolla 5 lines long : ovary subses- 

 sile : seeds globose, smoothish. — Pacif . Rural Press, 1 882, with figure ; Engelm. in Proc. 

 Am. Acad. xvii. 222. — Chirricahua Mountains, S. Arizona, Lemmon. 



Gh nivalis, L. In a subsection, C ijclostigma, of Pneumonanthe, with stigmas surmounting a dis- 

 tinct style, much dilated, forming together a circular disk. A low annual, branching . leaves 

 ovate, quarter-inch long : flower half-inch long : calyx lobes subulate : corolla deep blue, its 

 lobes ovate, acute : ovary sessile : seeds favose. — PI. Dan. t. 17 ; Griseb. in DC. Prodr. ix. 

 103. — Labrador, coll. by Moravian missionaries. (Greenland, Iceland, Eu.) 

 Top. 122, add: — 



G. Porwoodii, Gray. Very near G. affinis, smooth throughout : stems numerous in the 

 cluster, diffusely ascending, 6 to 1 6 inches high, equally leafy to the summit : leaves oblong 

 or lowest ovate, and upper narrowly lanceolate, about inch long : calyx short (2 or 3 lines 

 long), spathaceous and toothless (rarely one or two small subulate teeth), cleft more or less on 

 one or both sides, or the sphacelate margin undulate-truncate : corolla more narrowly fun- 

 nelform and smaller than in G. affinis. — Proc. Am. Acad. xix. 86. — Rocky Mountains in 

 Dakota and Montana, Dr. Forwood, Canby, tire. 



Gr. Bigelovii, Ghat, 1. u. Near G. affinis, very leafy : leaves thicker ; lower lanceolate- 

 oblong, upper linear : stems a foot or less high, minutely scabrous • flowers densely spicate : 

 calyx-teeth filiform or slender-subulate, as long as the tube : corolla hardly inch long, cylin-/ 

 draceous, minutely scabrous outside, especially so along the salient lines which in the bud 

 border the infolded plicae ; lobes short, broadly ovate, mostly erect, double the length of 

 the bifid appendages of the plicse : stipe of the capsule short and fistulous : seeds with a 

 narrow and thickish wing. — C. affinis, Torr. Bot. Mex. Bound. 157, &c. — Mountains of 

 S. Colorado and New Mexico, Bigelow, Hall & Harbour, Greene. Also those of S. W. 

 Arizona, Lemmon. 



Gr. Rusbyi, Greene. Between the preceding and the Mexican G. spathacea, HBK. : stem 

 robust, a foot high, scabrous, few-flowered at the summit : leaves thickish, narrowly oblong 

 and upper ones lanceolate ; uppermost subtending and equalling the flowers : calyx-lobes 

 slender-subulate or linear, about the length of the tube : corolla apparently white, over an 

 inch long, campanulate-funnelform, smooth ; the short and broad lobes very obtuse, twice 

 the length of the short teeth of the plica?. — Mogollon Mountains, New Mexico, Busby. 



POLEMONIACB^. 



The genera are very difficult to define. Even Phlox has a species with prevail- 

 ingly alternate leaves and four or five ovules in each cell. The character of 

 unequally inserted stamens, by which to distinguish Collomia, breaks down com- 

 pletely (Proc. Am. Acad. xvii. 223) ; the declination of the filaments does not 

 hold through Polemonium, and they are much more declinate and curved in sev- 

 eral species of Gilia of different sections. Some, of more than one group, have 

 an obviously but variably irregular limb to the corolla, quite as much so as in any 

 species of Lceselia. So it has become necessary to incorporate Collomia into 

 Gilia, along with certain bractless species which had been taken to form an 

 anomalous section of Lceselia. The principal characters now relied upon for the 

 genera are indicated below. 



4. (to be 2.) GriLIA, Ruiz & Pav. — Flowers naked, not involucellate. 

 Calyx partly herbaceous, scarious below the sinuses ; lobes narrow and acute. 

 Corolla from salverform or funnelform to campanulate or almost rotate. Fila- 

 ments not bearded at base. Seeds wingless. — Herbs or a few suffruticose. 



