210 
long. flexuous, the stout petiole decidedly shorter than the rather ta- 
pering rachis. Leaflets thick, 10-17 pairs, oval, 5-30 mm. long, often 
acutish at both ends, strongly petiolulate, often nearly contiguous, in- 
clined to be smooth above and short-wavy-hairy below and on the 
margins. Stipules triangular, green above, about as long as the near- 
est leaflet, adnate, not connate. Stems very short, woody, and almost 
creeping as in A. argophyllus, the season’s growth with white inter- 
nodes nearly 3 cm. long. Western side of the Mogollon plateau from 
Prescott and Skull valiey Ariz. to Springdale Utah, and eastward at 
least as far as Flagstaff Ariz. Lower and extending into the Middle 
Temperate life zone, among pines and junipers on mesas. This is a 
well marked but very variable species with pods much like those oí A. 
Missouriensis but thicker, the pubescence and habit and general char- 
acteristics are those of the argo; hylius group. It has been referred to 
both Missouriensis and Shortianus, and may bea form of argophyilus 
var pephragmenus bnt the broad and stubby flowers with petals ali 
about equal are different. : 
Astragalus remulcus var. Chloridae N. Var. Pods linear-oblong, 
about 3-4 cm. long, 5-9 mm. wide or high, often arched to a half circle. 
Dorsal suture infolded (but pods scarcely sulcate) and then produced 
as a thin partition over half way to the ventral suture, or pods wholiy 
1-celled and suture not intruded. Pods and flowers racenıose, with the 
rachis 1-2 dm. long, on peduncies 1-2 ft. long. Calyx teeth subulate, 
1-3 mm. long, nigrescent. Leaflets elliptical and nearly always strong- 
ly apiculate. Proper stems almost none, This is a striking variéty, 
appearing as if a hybrid with A. Layneae, but with only the septum ot 
that species. Chloride Ariz., among junipers on gravelly mesas. li 
blooms in April. 
170 Astragalus pygmaeus Nutt. in T & G. Fl. N. A. 1 349 1838 as 
Phaca). A. Chamaeleuce Gray Bot. Ives 10 (1860). The pygmaeus 
of authors is a synonym of earlier species. The plant on which Gray 
intended to found Chamaeleuce was A. Newberryi, but as he gave no 
description and cited this as his type ^. Chamaeleuce becomes a syno- 
nym. Pods 2.5-4 cm. long, 2 cm. wide, nearly 1 cm. high, mottled but 
ashy till mature, elliptical to oblong-ovate, when fresh half-oval-ovate 
or half-oval and without any apparent sutures and with smooth out- 
line and with pulp about 4 mm. wide when fresh and with large cells 
which soon dry out and feave air spaces in the pulp, when dry the 
pulp is about 2 mm. wide and is traversed by threads from the cel. 
walls and by a coarse and fibrous network near the outer skin (shown 
by interrupted black lines in drawing “a” and flat-wise by "d") which 
either adheres to the papery skin like the veins in the wing of a cicada 
(hence my name “cicadae”) or separates from it according to the dry- 
ness or moisture in the air at the time of maturity. This inner skin i> 
thin but denser and full of fine parallel lines. The cavity of the pod is. 
full of juice which dries to cobwebby hairs. The pods are oblique 
but a little arcuate if at all. Cross-section round to oblate-oval. The 
flowers are mostly white or light-colored, about 2 cm. long. Banner 
oval, about 2 cm long, gently arcuate remote from the calyx to 45-90 
degrees, the erect part much shorter than the rest, whitish but purple 
veined at tip, with sides reflexed about ] mm. wide in the middle, 2-3 
mm. longer than the keel. Wings linear, about 1mm. wide, a little 
arched, purple and purple-veined, rounded, hardly 1 mm. longer than 
keel and much narrower. Keel about 7 mm. long, with straight base. 
and the tip arcuate in a quarter circle to nearly erect and triangular 
but obtuse, about 3 mm. high. Calyx tube 6-8 mm. long and 2-3 mm. 
high, reddish, ashy, deeper cleft above, narrowed below and attached in 
line with the base, the sides about straight, split by pod at maturity, 
on a stout pedicel about 1 mm. long whichis nearly as long as the thick 
and green and ovate bract. Calyx teeth triangular and about 1 mm. 
. long in the type. Peduncles stout, longer than the leaves. Leaves 2-5 
 em.long in the type, wide, the petiole longer than the short leaí-ra- 
chis which is tsout and tapers but little. Leaflets contiguous, from — 
