102 



\ 



1 



cannot yet be regarded as established. True P. nitens has a 

 transversely rugose achenium and a short tubercle; true P. sctr- 

 poides a smooth or but slightly rugose achenium and a long j 



tubercle. A specimen in Herb. Torrey, collected by Leaven- 

 worth in East Florida and written up by Dr. Torrey as P, inter- \ 

 media, has a strongly rugose achenium and a tubercle intermedi- 

 ate in length, indicating that they may all be but forms of one 

 species, to which VahUs specific name must be applied. P. Tex- 

 ensiSj Torn & Hook., seems not much more distinct than the • 

 others. The fourth member of the genus [P. corymbiformis ^ 

 (Wright), Benth, & Hook., Gen. PL, iii., 1048; Scirpiis corymhi- 

 formis, Wright, in Sauvalle Flor. Cubana, 176), has much more 

 claim to specific rank, 



Firnbristylis capillaris (L.), Gray, must include a large num- 

 ber of forms differing slightly in the amount of bearding at the 

 mouths of the sheaths, the acute or obtuse apices of the scales 

 and the size, markings and color of the nut. Besides the synon- 

 omy cited in Hemsley's Biologia, we must add Isolepis ctltatt- 

 folia^ Torn, which appears hardly separable even as a variety, 

 while the following may perhaps stand as varieties or marked 



forms : 



KVar. PILOSA, n. van Culms densely pilose throughout; 



scales dark brown, acute. (Guatemala, Santa Rosa, Tiirckheim, 



1887, No. 1283; Orizava, Muller, 1853, No. 1966.) 



Van COARCTATA (Ell.) {Isolepis coarctata, Torn) Umbels 



contracted ; spikes linear-oblong. 



Firnbristylis Vahlii, Link., Hort. Berol, i, 287, is the older 



name for F, congesta, Torr., Ann. Lye, iii., p. 345, as noted by 



Boeckeler, Linnaea, xxxvii., p. 9. 



Firnbristylis monostachya (Vahl), Hassk., PI. Jav. Ran, p. 61 



(1848), is the name for Abilgaardia monostachya, Vahl, following 



Bentham and Hooker in reducing the genus to Firnbristylis. 



Firnbristylis sckoenoides^ Vahl, has been collected by A. H. 



Curtiss, in Walton Co., Florida, as I have recently been informed 



by Dr. Watson. I do not find any record of its occurrence 



otherwise nearer than southern Asia, but there is a marked 



tropical distribution of Cyperaceae of which this is perhaps only 



another example. 



