Macbride — North American Spermatophytes 49 
This form, which differs from the typical state only in having 
its pods glabrous instead of puberulent, in many localities is the 
more common. It seems desirable, therefore that it should be 
named but I do not think that it merits more than the rank of form 
since most species of the genus exhibit the same variation and 
since often plants with glabrous and with pubescent pods are found 
growing in proximity. 
’ MrraBILIS MULTIFLORA (Torr.) Gray, var. glandulosa (Standl.), 
comb. nov. Quamoclidion multiflorum Torr., subsp. glandulosum 
Standl. Contrib. U.S. Nat. Herb. xii. "359 (1909). . 
¥ MIRABILIS MULTIFLORA (Torr.) Gray, var. obtusa (Standl.), 
a nov. Quamoclidion multiflorum Torr., subsp. obtusa Standl., 
ee: 
Prof. Jepson in his Flora of California iv. 457 (1914) has re- 
ferred the segregate genera Quamoclidion and Hesperonia, recently 
taken up by Standley, to Mirabilis. This interpretation of the 
latter genus accords with the work of Watson, Gray and Greene. 
The known range of the variety glandulosa of M. multiflora has 
been extended from Colorado to Arizona as indicated by specimens 
secured at the Grand Cafion ce Mrs. Spencer, June, 1916. 
Petalostemum Grothii, spec. nov., undique glabrum circa 3 dm 
altum; caulibus mediocriter gon cilibus; foliis 3-5-foliolatis: 
foliolis paullo involutis linearibus euspidatis parce glandulosis: 
spicis longius pedunculatis ex ovatis demum cylindricis densi- 
floris; eri persistentibus abrupte aris einen basi sericeo- 
villos ata; calycis dentibus auonpe subaequalibus tubo 
Mespaoeet te brevioribus; floribus rosea-purpureis; stylo a basi 
ad medium barbato. — Texas: in velly soil near Bracken 
Bexar Co., July 25, 1908, B. H. A. Groth, no. 148 (Typx, ae 
Herb.). 
This species is closely related to P. virgatum, having the long 
peduncles and partially glabrous calyx of that species but much 
shorter calyx-lobes and pubescent style-base. The calyx, except 
for the glabrous teeth, is similar to that of P. purpwreum but the 
bracts of the latter are not persistent. When Dr. Greenman was 
at the Gray Herbarium a number of years ago he studied this 
Petalostemum and in notes which he made at that time he indicated 
the distinctive characters as given above. He did not pursue the 
matter to the point of publication, however, and has generously 
given me permission to publish the species. 
