Notes on genera of Paniceae : I-IV . ustrated and are equallycovered by the generic description the firstspecies is here taken as the type of thegenus. A duplicate type of this, Exherb. Humboldt, was examined in theBerlin Herbarium. Helopus Trin. Fund. Agrost. 103. pi. A single species, H. pilosus Trin.(op. cit. 104) is included. Since the genusiinly and not the species is described andsince no specimen is cited we should con-sider the species based on Milium ramo-sum Retz., which is cited as a synonym,save for the fact that plate 4 shows an aristate lemma while Retzius(Obs. Bot. (5:12
Notes on genera of Paniceae : I-IV . ustrated and are equallycovered by the generic description the firstspecies is here taken as the type of thegenus. A duplicate type of this, Exherb. Humboldt, was examined in theBerlin Herbarium. Helopus Trin. Fund. Agrost. 103. pi. A single species, H. pilosus Trin.(op. cit. 104) is included. Since the genusiinly and not the species is described andsince no specimen is cited we should con-sider the species based on Milium ramo-sum Retz., which is cited as a synonym,save for the fact that plate 4 shows an aristate lemma while Retzius(Obs. Bot. (5:12. 1791) states that the valyula exterior is ma-cronate only, and that Trinius later (Gram. Pan. LS26) givesHelopus pilosus Trin. as a synonym of Paspalum punctatum Fliigge(Milium punctatum L.), while Milium ramosum Retz. he gives as asynonym of Paspalum annulatum Fliigge. In the Trinius Herbarium isa specimen collected by Mikan in Brazil, which is marked in Triniushand Helopus pilosus m. Paspalum 2Junctatum Fliigge. AVhether or. Fig. 4. Eriochloa distachya. (Two views of spikelet and fruit x 10 diam.) Chase—Notes on Genera of Panicese. IV. 125 not this specimen be taken as the type of H. pilosus we know that thespecies Eriochloa punctata (L.) Hamilt. (Prod. PI. Ind. Occ. 5. 1825),based on Milium punctatum L., should be taken as tbe type of tbe genusHelopus Trin. Trinius places Eriochloa H. B. K. immediately after Helopus in hissystematic arrangement and (page 75) differentiates the two as follows: Racemi ad rachin communem. Cor. apice mucronato-aristata . subpaniculati. Involucrum stellato-setosum! Eriochloa. Probably Trinius had not at that time seen Kunths species and wasimpressed by Kunths description of an involucre of numerous hairs at theapex of tbe pedicel and by the ring of spreading hairs shown in plate (Mem. Acad. St. Petersb. VI. Sci. Xat. 3 : - 130 and 133. 1834) thespecies of both Eriochloa and Helopus are placed in Paspalum in tbe su
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