MONOCOTYLEDONES. ."227
Superantibus, rccurvis, laevibiis, indivisis, alteriiis, distanti- bus. LocustcB subcylindraceae, cernuae v. peiiduloe, semun- ciales, pnrpureae, nitidx*, per lentcm tennissiine pubescentes. Glif.ma bivalvis, nana, insequalis, niembraiiacea, purpurea, mutica; valvula inferiore ovwi^, acuta; ivz/ymor^ obovata, [cpxc obtusissima, inferiore duplo latiore, paulo longiore. Peri- anfhia altcrna, distincta. Valcida inferior obovato-oblonga, obtusissima, concava, quinquencrvis, extus pube brevissiuia appressa conspersa, apice marginibusque ab apice ad medium albis, scariosis, nervis omnibus infra apicem desinentibus, medio in mucronuhun brevissimum, marginem valvulse vix attingentem prochicto. Valvida superior longitudine fere inferioris, manifeste angustior, elliptico-lanceolata, apice profunde emarginato, lateribns indnplicatis, dinervis, nervis brevissime ciliatis, singulis bisetis, sefis lateralibus, per paria oppositis, du(B inferiores infra medium valvulse orta3, subu- lato-filiformes, strictae, modice ])atentes, denticulatae, longi- tudine circiter dimidii totius valvulae ; dim superiores paulo supra medium valvnlae ortum ducentes, brevissimae, dcnti- culatse, mucroniformes, altera quandoque obsoleta. Lodi- culm 2, collaterales, approximatse, bi'evissimae, truncata^, basi leviter cohaerentes, sed absque laesione scparandce. Stamina 3, filamentis ca[)illaribus, antheris linearibus utrinque semibifidis. Ovarium ovatum, imberbe. Sti/Ii 2, glabri. Stirpnafa laxe plumosa, liyalina, ramis denticulatis, superioribus vix brevioribus. Cart/opsis libera, lateraliter com- pressa, ventre angusto-lineari, leviter canaliculato, axi longi- tudinaliter saturatiore. Evdxryo caryopside triplo brevior.
Ohs. Duplex varietas.
a, elatior, subspithamea, antheris stramineis. Tab. D, f. 1—7.
/3, 3-4-uncialis, antheris purpureis. Tab. D, f. 8 — 10.
The specific name is given in honour of Captain Edward Sabine, in whose herbarium, the most extensive formed in the voyage, numerous speciuiens were found of both varieties of this remarkable grass.
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