no 



long, floxuous, 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 petiolnlate, often nearly contiguous, in- 

 clined to be smooth above and short-wavy-hairy below tnd on the 

 margins. Stipules triangular, green above, about as long as the near- 

 est leaflet, adnate, not connate. Stems very short, woody, .uid almost 

 creeping as in .'\. argophyllus, the season's growth with white inter- 

 nodes nearly 3 cm. long. Western side of the .Mogollon plateau from 

 Piescott and Skull valley .\riz. 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 of .\. 

 Missouriensis but thicker, the pubescence and habit and general cliar- 

 acteristics are those of the argoi hyllus group. It has been referred to 

 both Missomiensis and Shortianus, and may be a form of argophyllus 

 var pephragn.enus but the broad and stubby flowers with petals all 

 about e<iual 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 wholly 

 l-ce!led and suture not intruded. Pods and flowers racemose, with the 

 rachis 1-2 dm. long, on peduncles 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 variety, 

 appearing as if a hybrid with A. Layneae, but with only the septum ol 

 that species. Chloride Ariz., among junipers on gravelly mesas. L 

 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 pygmaeu.-; 

 of authors is a synonym oi earlier species. The plant on which Gray 

 intended to found Chaisaeleuce was A. \ewberryi, but as he gave no 

 description and cited tlii ; as his type A. Chamaeleuce becomes a syno 

 nyrn. Pods 2.5-4 cm. long, 2 cm. wide, nearly 1 cm. high, mottled but 

 tsh}' till mature, elliptical to oblong-ovate, when fresh half-oval-ovate 

 or half oval and without iiny apparent sutures and with smooth out- 

 line and with pulp about 4 mm. wide when fresh and with large cells 

 wliich soon dry out aiul leave air spaces in the puip, when dry the 

 pulp is about 2 mm. wide and is traver.'ed by threads from the celi 

 walls and by a coarse am! fibrous netwo; i: near the outer skin (shown 

 by interrupted black lines in drawing "a " and flat-wise by "d") whicli 

 either adheres to the papery skin like ll:.:^ veins in the wing of a cicada 

 (hence my name "cicadae") or separate : I'rom it according to the dry 

 ness or moisture in the air at the time of maturity. This inner skin is 

 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 iit all. Cross-section round to oblate-oval. The 

 flowers are mostly v/bite or light-colored, about 2 cm. long. Banner 

 oval, abouc 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 1 mm. wide in the middle, 2-3 

 mm. longer than the keel. Wings linear, about 1 mm. wide, a little 

 arched, purple and purple-\ eined, rounded, hardly 1 mm. longer than 

 keel and much narrower. Keel about 7 mm. long, with straight base, 

 and the tip arcuate in a ipiarter 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 which is nearly as long as the thick 

 and green and ovate bract. Calyx teeth triangular and about 1 mm. 

 long in the tj'pe. Peduncles stout, longer than the leaves. Leaves 2-5 

 cm. long in the type, wide, the petiole longer than the short leaf-ra- 

 chis which is tsout and tapers but little. Leaflets contiguous, from 



