193 Plants collected during a journey 



illinoensis of Michaux. The name is in honor of Dr. W. 

 Darlington, of West-Chester, in Pennsylvania, a zealous bo- 

 tanist, and author of the Flora Cestrica. The present species 

 is nearly allied to D. glandulosa, in its falcate legumes, but 

 resembles D. brachyloba in its leaves. 



10S. Mimosa ? seu Acacije sp. ? M. suftruticosa, iner- 

 mis, hirsuta ; foliis bipinnatis pinnis 10-12-jugis; foliolis 

 20-24-jugis, oblongis ; spicis capitatis, pedunculatis, floribus 

 pedicellalis, polyandris. 



Hab. With the preceding. 



Obs. Peduncles" axillary, 1-2 inches long, fasciculate. 

 Spikes globose. Flowers distinctly pedicellate, white, poly- 

 gamous. Calyx nearly entire, minute. Petals 5, distinct. 

 Stamens more than 100 in each flower ; filaments much exsert- 

 ed ; anthers minute, globose. Stigma minute, simple. Le- 

 gumes not seen. For want of the fruit, I am unable satisfac- 

 torily to determine the genus of this plant. It is evidently 

 one of the Mimoseae, and perhaps an Acacia. It is merely 

 recorded for future examination. 



109. SCHRANKIA UNCINATA, Willd. Spec. IV. p. 1041. 



DC. prod. ii. p. 443. Mimosa horridula, Michx.fi,. ii. p. 154. 

 Plains of the Platte. 



Obs. Of this numerous tribe of the Mimoseae, though so 

 abundant in Mexico, very few extend even to the most southern 

 parts of the United States. The Schrankia uncinata is found 

 farther north than any other species. 



110. Pkosopis glandulosa, Plate II. P. spinis crassis, 

 cylindraceo-conicis ; foliis conjugato-pinnatis, seu pinnis uni- 



jugis ; foliolis distantibus, 6-7-jugis, linearibus, subfalcatis, 

 obtusis, glabris, subcoriaceis, petiolo inter pinnas, et foliolis 

 glandulosis ; leguminibus rectis ; spicis cylindricis. 



Desc. Branches terete, smooth, flexuous, thickened about the buds, 

 armed with strong spines about an inch in length. Leaves conjugato-pin- 

 nate, or with onty a single pair of pinnae ; common petioles fasciculate (S 



