THE CORRESPONDENCE OF SCHWEINITZ AND TORREY 191 
A. juncea I think I have found. 
A. longifolia as distinguished from clandestina I long to see. The 
latter I found at Harrisburg. 
Arundo coarctata 
| would be very acceptable. 
brevipilis 
Crypsis virginica I long to see in order to disting. fr. Agrost (is) 
virginica. 
Glyceria acutiflora do. do. from fluitans. 
maritima—do. 
pungens of Elliott I can furnish you. It grows here. 
serotina.—I do not understand what you mean by this species, 
citing the P. palustris of Muhl. 
Festuca fasciculata | fascicularis|\—would be very acceptable. 
Ceratochloa unioloides—ditto. 
Diarrhena americana—l find by your descript. that I must havé 
altogether mistaken this plant—and should be glad to get it. 
Trisetum purpurascens I should be glad to see. 
Avena praecox.—Should the citation of Pursh not be Aira praecox? 
I desire it. 
. Aira flexuosa 
aristulata pare quite unknown to me. 
pumila 
Lolium.—I have found a remarkable Lolinm—with sometimes 
furcate spikes—on the highest summit of the Allegany 
mountains—not yet examined. 
Atheropogon apludoides—is not rare here at Beth.—often three feet 
high. 
Panicum pedunculatum—unknown to me. 
macrocarpon—lI desire it because I am doubtful about 
mine. 
involutum 
depauperatum 
At Bethlehem I have found a Rhynchospora, which you do not 
describe, which would be the only northern plant I know of 
not in your book. 
The following isa list of my desiderata [lists 33 of the species 
named above, in reverse generic sequence] and beg to ask 
whether you want specimens òf the following [lists 9]. 
| both unknown to me. 
