(97) 



7. Acuan reticulata (Benth.) Kuntze. 



Desmanthus reticulatus Benth. Lond. Journ. Bot. 4: 3^7. 

 1842. 



Acuan reticulata Kuntze, Rev. Gen. PI. 158. 1891. 

 In dry soil, often on arid hills, southern Texas. 



8. Acuan fallax. 



Stems branched at the base, the branches spreading or 

 prostrate, 1-2 dm. long, finely canescent, angled. Leaves 

 with 4-8 pinnae: leaflets mostly 20-28, oblong, slightly 

 inequilateral, 3-5 mm. long, rather obscurely reticulated, 

 acutish : peduncles elongated, 3-7 cm. long, surpassing the 

 subtending bracts: spikes about 1 cm. in diameter: pods 

 linear, 3-4 cm. long, slightly curved, acute. 



In dry soil, San Diego, Texas. Type collected by Miss 

 Mary B. Croft, during the years 1885-6, no. 162, specimen 

 in the herbarium of Columbia University. 



10. MORONGIA Britton,* Mem. Torr. Club, 5: 191. 



1894. 



\Schrankia Willd. Sp. PI. 4: 1041. 1806. Not Medic. 



1792.] 

 Leaflets prominently nerved beneath. 1. M. uncinata. 



Leaflets scarcely, if at all, nerved. 



Sides and margins of the pods with similar or nearly similar prickles. 



2. M. angustata. 

 Sides and margins of the pods with conspicuously dissimilar prickles. 



Pods scarcely flattened, the sides with long and broad prickles, the 

 margins nearly unarmed ; beak 10-15 mm - l° D g- 



3. M. latidens. 

 Pods markedly flattened, the sides with very fine prickles, the mar- 

 gins with stouter prickles ; beak 4-5 mm. long. 



4. M. Roemcriana. 



i. Morongia uncinata (Willd.) Britton. 



Schrankia uncinata Willd. Sp. PL 4: 1043. 1806. 

 Morongia uncinata Britton, Mem. Torr. Club, 5: 191. 

 1894. 



*A Mexican species, Morongia aculeata, has been reported from Texas, but 

 I have not yet been able to examine authentic or satisfactory specimens. 

 Species additional to those here recognized have been described by Michaux 

 and Chapman, but I have not yet been able to segregate them. 



