Notes on genera of Paniceae : I-IV . e placedin the genus Alloteropsis Preslby Hitchcock (Contr. 12 : 211. 1909) but fur-ther study has made this dis-position of them appear anunnatural one. Alloteropsis is unique among the Paniceae in having aminute prolongation of the rachilla beyond the fertile palea. This is notpresent in all specimens of A. semialata examined, though it seems to beconstant in Bluffia eckloniana, but its. usual presence, together with theawn-tipped glumes and lemma, the glumes of like texture;- indicate arelationship too remote from the Cuban species to justify r
Notes on genera of Paniceae : I-IV . e placedin the genus Alloteropsis Preslby Hitchcock (Contr. 12 : 211. 1909) but fur-ther study has made this dis-position of them appear anunnatural one. Alloteropsis is unique among the Paniceae in having aminute prolongation of the rachilla beyond the fertile palea. This is notpresent in all specimens of A. semialata examined, though it seems to beconstant in Bluffia eckloniana, but its. usual presence, together with theawn-tipped glumes and lemma, the glumes of like texture;- indicate arelationship too remote from the Cuban species to justify retaining themin Alloteropsis. 24. Genus ISACHNE R. Br. Isachne R. Br. Prod. Nov. Holl. 196. 1810. The genus is based on asingle species, i. australis R. Br. collected by Brown in the vicinity ofPort Jackson, Australia. The type has not been examined, but there isno reason to doubt that it is the common species of Australia and NewZealand, known under this name. Isachne has usually been recognized as a valid genus ever since its pub-. Fig. 13. Scutachne dura. (Two views of spikelet and fruit x 10 diam.) 150 Chasi—Notes on Genera of Panieese. IV Nees (Agrost. Bras. 96
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