Chase Notes on Genera of Paniceae. I. 191 



sidered by Nash (1. c.) in his treatment of the genus the following are here 



transferred : 



Syntherisma adusta (Xees) 



Pnnicum aduxtum Nees. 1829. Agros. Bras. 101. "Habitat in Brasilia 

 meridional!. (Sellow.)" 

 Syntherisma badia (Scribn. & Merr.) 



Panicum (Syntherisma) badium Scribn. & Merr. 1901. U. S. Dept. Agr. Div- 

 Agros. Bui. 24: 12. "Sierra de San Felipe, State of Oaxaca" 915 

 C. L. Smith. 



Syntherisma Hackeli (Arech.) 

 Anthaenantia HacMi Arech. 1894. Anal. Mus. Nac. Montevideo 2 : 96, t. 



5. Figueira, Uruguay. 

 Syntherisma velutina (DC.) 



Milium velutinvm DC. 1813. Cat. Hort. Monsp. 12fi. " Hab. in Mexico." 

 Patpalum? velutinum Kth. 1829. Rev. Gram. 1 : 27. 

 Represented by Pringle 6628 and 9565. 

 Syntherisma Perrotteti (Kth.) 



Panicum Perrotteti Kth. 1829. Rev. Gram. 2 : 395. t. 3. " Crescit in Sene- 



galia, prope Walo." 

 Syntherisma stenotaphroides (Nees) 



Pmiicum ($ Digitaria) stenotaphroides Nees 1854 in Steud. Syn. PI. Glum. 



1 : 41. "Ins. Choin legit Cuming." 



This and an allied species are peculiar in having a thickened rachis, the 

 solitary spikelets sunken in the alternate notches. 

 Species as yet imperfectly understood are not here transferred. 



GENUS LEPTOLOMA GEN. NOV. 



Inflorescentia paniculata, paniculapauciflora, maturitatediffusa; spiculae 

 1-florae, fusiformae, solitariae, aut raro per paria, in pedicellis tenuibus 

 triangularibus ; gluma prima minuta aut deficiens, secunda 3-nervis ; lem 

 ma neutrum 5-7 nerve ; fructus ellipticus, acutus ; lemma hermaphroditum 

 cartilagineo-induratum, papillosum, marginibus delicatus hyalinas, planis; 

 paleasimilis ; caryopsis oblongo-elliptica lemmate paleaque inclusa, libera. 

 Gramina perennia, caespitosa, ramosa, culmis fragilibus, laminis planis, 

 ligulis membranaceis. Maturitate paniculae se dissipant et pervolvunt 

 Panico capillari similes. Nomen ab \7rr6s delicatus et Xw/xa margo. 



Inflorescence a few-flowered panicle diffuse at maturity ; 

 spikelets 1-flowered, fusiform, solitary or rarely in 2's on slen 

 der triangular pedicels ; first glume minute or obsolete, the 

 second 3-nerved, nearly as long as the 5-7 nerved sterile 

 lemma, a more or less prominent stripe of appressed silky 

 hairs down the internodes and margins of each ; sterile lemma 

 empty or enclosing a minute nerveless rudimentary palae ; 

 fruit elliptic, acute, brown; fertile lemma cartilaginous-indu 

 rated papillose, with delicate hyaline flat margins, enclosing 

 a palea of the same texture : styles long and delicate, stigmas 

 plumose, the branches more long and slender than in Panicum, 

 rather less so than in Syntherisma; grain oblong-elliptic, in 

 section plano-convex ; free within the closed lemma and palea . 

 Tufted branching perennials with brittle culms, flat blades, 



