I'laiifdc Avdrewseae. 175 



rather iiu-onspicuous and but slightly divergent; sori short but nearly con- 

 necting to those in the successive lobes, so forming almost a continuous 

 sorns from base to apex of pinnule ; indusiuni straight, forced back and 

 tinalh' concealed by the sporangia. 



Perhaps most nearly allied to .1. Bv(tdleyi D. C. Eaton but probably not 

 very closely even to this. Mr. Andrews writes of it as follows: "The most 

 interesting item on the list to me. I am sending a better specimen. It is 

 certainly indigenous and grows on the south face of a white sandstone 

 (alkaline) cliff extending along Boulder Creek for a inile or more, the ferns 

 growing in crevices abundantly for nearly the whole distance. It is grow- 

 ing with ClieihinthcK Feei, a specimen of which I send you. The sandstone 

 is porous and is not entirely dry." 



Nemexia herbacea melica subsp. nov. 



Green and glabrous throughout except for the slight scabrosity on the 

 veins on the lower face of the leaves ; leaves broadly ovate, subcordate at 

 base, subulate-apiculate at apex, thin, green above, pale and subglaucous 

 beneath, G-10 cm. long, 4-8 cm. broad, 7-nerved, the three central nerves 

 larger than the others ; petioles slender, 1-.3 cm. long ; peduncles of the stam- 

 inate flowers slender, striate, shorter than the subtending leaf, those of 

 the pistillate similar but stouter, also (even at maturity) shorter than the 

 subtending leaf; sepals oblong-linear, about 4 mm. long, longer than 

 the stamens ; berry blue-black at maturity, 7-8 mm. in diameter ; seeds 3 (in 

 berries examined), large and very hard. 



I hesitate to propose this as more than a variety. It is a near relative of 

 Nemexia {SniUax) Jinbacea and is not readily separated from it by floral or 

 fruit characters. If it becomes a species, N. melica, it must be on the follow- 

 ing points : (1 ) Its habit: — Mr. Andrews writes of it as follows : " Strictly 

 erect where it can cling to small trees and bushes, growing straight through 

 and often out at ^he top, attaining a height of 2-3 m. Growing in the open, 

 as it frequently does after the thickets have been cleared away, it twists 

 al)out and becomes tangled." (2) Its very thin membraneous leaves. (3) 

 Its actually and relatively shorter peduncles. (4) The large size of its 

 sterile flowers. (5) The remarkably slender tendrils. (6) The sweet or 

 honey-scented flowers in contrast to the carrion-like odor of the other. It 

 furthermore is a good geographical species. True N. herbacea, widely dis- 

 tributed as it is, does not occur very near to the middle Rocky Mountains. 



I take as type Mr. Andrews' specimens from Boulder Canon, — fruit in 

 1903, flowers (staminate and pistillate) in 1904. Dr. Francis Ranaley's No. 

 695, from the same locality, is the same. 



Crataegus coloradensis sp. nov. 



Leaves 4-5 cm. long, mostly broadly oval to orbicular in outline, some- 

 times a little narrower, or the upper half broadly triangular-acute; the 



