NEW OR NOTEWORTHY SPECIES. 229 
From Modoc or Lassen Co., California, and from Ashland 
Butte, Oregon. Mr. Howell, who collected the specimens 
last referred to, distributed them as H. cynoglossoides, var. 
nudicaule ; but they show specific characters. The under- 
ground growth is evidently quite peculiar. 
APOCYNUM MEDIUM. Erect, 2 to 4 feet high, branching 
above: leaves ascending, ovate-oblong or elliptical, acute, 
mucronulate, pale and sparingly pubescent beneath: the 
rather numerous branches flowering almost simultaneously, 
the flowers in double or treble loose short-peduncled cymes 
and nodding: calyx-segments broadly lanceolate, more than 
half as long as the corolla: corolla light rose-color, 2 lines 
long, with short-cylindric tube a little longer than the trian- 
gular-lanceolate spreading segments: pods deflexed. 
Plant perhaps not uncommon in the middle eastern States ; 
being the A. androsemifolium of the District of Columbia 
lists, but as exactly intermediate as possible between that 
Species and A. cannabinum. The essential differences be- 
tween those two do not seem to me to have been at all fully 
stated hitherto. A. androssemifolium is seldom if ever erect. 
. Its branches are ascending; its foliage either spreading or 
deflexed, and all its branches flower simultaneously; its 
corollas are pinkish or rose-color, exactly campanulate and 
nodding. A. cannabinum is always strictly erect, with as- 
cending—never spreading—foliage. Its branching is of the 
dichotomous order, the terminal cluster of flowers always 
developing first; those of the lateral branches superseding 
the first and appearing later. The corollas are green (so 
described even by Linnzeus) never white or even tinged 
with pink or rose; they are strictly erect, narrow and cylin- 
dric. It should be noted further that A. cannabinum is in- 
variably light green as to the color of its herbage; the other 
dark green, with a glaucous-pale under surface to the foliage. 
A. medium has the general hue; the pinkish flower-color, and 
that simultaneous flowering of all the branches which be- 
