(IOO) 



Mexico. The form with merely puberulent stems and 

 branches, and rather larger glabrous leaflets, is Mimosa mala- 

 cophylla glabrata Benth. 



7. Mimosa Berlandieri A. Gray. 

 Mimosa Berlandieri A. Gray ; Torr. Bot. Mex. Bound. 

 Surv. 61. 1859. 



In low grounds, southern Texas and San Luis Potosi, 



Mexico. 



8. Mimosa strigillosa T. &. G. 



Mimosa strigillosa T. & G. Fl. N. Am. 1 : 399. 1840. 

 On river banks and in moist soil, chiefly near the coast, 

 Florida to Texas. 



12. NEPTUNIA Lour. Fl. Cochinch. 653. 1790. 



Spikes about 50-flowered, oblong-cylindric. 1. N. lutea. 



Spikes about 20-flowered, ovoid or oval. 

 Bracts and calyx-lobes ciliolate. 



Pinnae 4-6 : leaflets merely ciliolate. 2. A 7 , pubescens. 



Pinnae 6-10 : leaflets ciliate, and pubescent beneatb. 



3. N. Lindheimeri . 

 Bracts and calyx-lobes not ciliolate. 4. N. Floridana. 



i. Neptunia lutea (Leavenw.) Benth. 



Acacia lutea Leavenw. Am. Journ. Sci. 4: 61. 1824. 



Neptunia lutea Benth. Lond. Journ. Bot. 4: 356. 1842. 



In moist often clay soil, Arkansas and the Indian Territory 

 to Florida and Texas. A Texan form with nearly or quite 

 glabrous branches and peduncles, is known as Neptunia 

 lutea tenuis (Benth.) Robinson. 



2. Neptunia pubescens Benth. 



Neptunia pubescens Benth. Lond. Journ. Bot. 4 : 356. 

 1842. 



In dry soil, southern Texas and tropical America. 



3. Neptunia Lindheimeri Robinson. 

 Neptunia Lindheimeri Robinson, Proc. Am. Acad. 33: 

 333- 1898. 



On prairies, Texas. 



