f)5 



HOMALOBI. 



Pods wholly 1-celled, witli rib-like sutures which are 

 neither conspicuously raised as sharp edges nor intruded 

 as partitions, splitting along both sutures from the tip, (from 

 the base in A. stenophyllus), rarely sulcate dorsally, not at 

 all ventrally, with walls papery to thin-coriaceous, rarely a 

 little inflated, with body linear to oblanceolate or rarely nar- 

 1 owly oblong to half-oval. Flowers racemose, rarely capi- 

 tate. Perennials (A. quinqueflorus is annual.) 



J8^°° The synonymy in the text is much abbreviated to avoid packing the de- 

 scriptions with useless matter. Complete synonymy is given in the Index 

 where all names are found under the recognized species to which they belong. 

 Abbreviated cross references are given under generic synonyms simply to aid 

 in finding the correct name. 



Key 



A. Pods papery, reflexed, with sutures thicker than the walls (not 

 evidently so in the stenophyllus group), not sulcate, normally 

 completely laterally flattened when immature and mostly so when 

 ripe, abruptly apiculate, with suture the more arched except rarely 

 in A. sitenophyllus, narrowed below. Pedicels not twisted. 

 AB. Calyx almost turbinate, 1-2 mm. long, the slender teeth at 

 least half as long as but little longer than tube. Stipules con- 

 spicuously connate. Foliage inclined to blacken on drying. 

 Weak, much branched, and very slender plants with small and 

 purplish (rarely whitish) flowers. Leaflets long-petiolulate acute 

 at base and narrowed. Pods aln.ost sessile or on a stipe not 

 much longer than calyx, narrowly oblong to half-oval, with the 

 sutures prominent. 

 ABC. Calyx teeth decidedly shorter than the tube. Ribs of pods 

 conspicuous. Peduncles elongated and subterminal and with 

 the rachls often a foot long. Leaflets distant, mostly folded 

 and rather thick, but really oblong, seemingly linear. Leaves 

 never sessile. Perennials of dry and open mountain slopes in 

 Lower Temperate Life zone. Tenelli. 



1 Wingatensis, 



2 tenelliis. 



AB2C. Calyx teeth longer than the tube and unequal, tube about 

 2 mm. long. Pods short-oblong to half-oval, ashy, inflated and 

 cross-section deltcid-ovaite, not 1 cm. long (about 8 mm.) 3-5 

 mm. hinh, about sessile. Ventral suture nearly straight, the 

 dorsal much arched. Flowers purplish, ascending, 5-7 mm. 

 long, in short racemes on short and filiform peduncles which 

 are much shorter than the leaves and solitary and axillary 

 nearly throuphout. Leaves all petioled. rarely 6 cm. lonq. 

 Leaflets nearly linear and acutish at both ends to narrowly 

 elliptical and obtus^. thin, nearly 2 cm. lonq. Pubescence 

 ashy throughout. A. pauciflorus and miser might be sought 

 here as they are near relatives but becaus-^ of much inflated 

 pods and ventral suture being less arched they are placed in 

 the inflati. 



^__ — CoK« »I. 



