228 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Marshes, Hanabana, May 27, Wright 3873; Batabano, Baker HC 2763, Hitchcock 

 in 1906, Palmer & Riley 1134. 



Wright's specimen in the Sauvalle Herbarium has also the secondary number 

 183. In the Grisebach Herbarium this occurs with the number 183 and is labeled 

 Panicum virgatum variety cubense, "Low savannas, Hanabana, May 19." This form 

 is characterized by the more obtuse spikelets, narrower panicle, and culms solitary 

 or few in a clump. 



48. Panicum wrightianum Scribn. U. S. Dept. Agr. Div. Agrost. Bull. 11: 44. 

 1898. 



Panicum minutulum Desv. Opusc. 87. 1831, not Gaud. 1826. 



Wright 3463 in National Herbarium. 



There is a specimen of this species in the Grisebach Herbarium from western Cuba, 

 1863, numbered "895=3463," and bearing the note "Spiculis puberulis." Wright's 

 3463 in the Boissier and in the Kew Herbarium consists of this species and P. leu- 

 cothrix. It is to be noted that P. tenue and P. caerulescens are also distributed in 

 various herbaria as Wright 3463. Wright's 3463 in the Gray Herbarium is labeled 

 "Lagunas, Vueltabajo, July 24." The sheet also bears a small plant of P. leucothrix. 



49. Panicum zizanioides H. B. K. Nov. Gen. & Sp. 1: 100. 1816. 

 Panicum oryzoides Sw. Prod. 23. 1788, not Ard. 1764. 



Wright 3466; Laguna Castellano, Baker HC 4335. 



Grisebach 's specimen of Wright 3466 is also without locality. 



33. ICHNANTHUS Beauv. Agrost. 56. pi. 12. f. 1. 1812. 



Blades, especially those of sterile shoots, contracted into petiole-like 



bases, as much as 1 cm. long 4. /. wrightii. 



Blades not contracted into petiole-like bases. 



First glume as long as spikelet; stem creeping, blades ovate 2. /. nemorosus. 



First glume one-half to three-fourths as long as spikelet; stem 

 ascending. 



Blades narrowly linear-lanceolate, thick and firm 1. /. mayarensis. 



Blades ovate-lanceolate, thin, usually 10 to 15 mm. wide... 3. I. pallens. 



1. Ichnanthus mayarensis (Wright). 



Panicum mayarense Wright, Anal. Acad. Cienc. Habana 8: 206. 1871; Sauv. Fl. 

 Cub. 197. 



Pinales de Mayari, July 24, and Mayarf Abajo, August 2 (1860-64), Wright 3468 

 in Gray Herbarium. 



This species is represented by two sheets, as noted above, the second of which, 

 marked Mayari Abajo, is the type, as this locality agrees with that published. This 

 number has been found in no other herbarium. The fertile lemma is slightly over 

 2 mm. (2.2 mm.) long, and the margins do not meet except at the tip, thus exposing a 

 narrow strip of the palea. The scars at the base are small and the wings are wanting. 



2. Ichnanthus nemorosus (Sw.) Doell in Mart. Fl. Bras. 2-': 289. 1877. 

 Panicum nemorosum Sw. Prod. 22. 1788. 



In dense woods, Retiro, November 20, Wright 3881; damp woods near the Mogote 

 de Mono, October 8, Wright 3882; shady banks of Rio Sico in Arroyo Hondo, Pinar 

 del Rio, December, Wright 3858. 



3. Ichnanthus pallens (Sw.) Munro; Benth. Fl. Hongk. 414. 1861. 

 Panicum pallens Sw. Prod. 23. 1788. 



Wright 750; El Guama, Palmer & Riley 130, 218; Baracoa, Pollard, Palmer & 

 Palmer 15. The following are in the herbarium of the New York Botanical Garden: 

 Santiago de Cuba, Taylor 385, 526, Hamilton 215; Baracoa, Underwood & Earle 267; 

 El Sigual, Eggers 4661. 



