Chase — Notes on Genera of Paniceae. IV. 125 



not this specimen be taken as the type of H. pilosus we know that the 

 species Eriochloa punctata (L.) Hamilt. (Prod. PI. End. Occ. 5. 1825), 

 based on Milium punctatum L., should be taken as the type of the genus 

 Helopus Trin. 



Trinins places Eriochloa II. B. K. immediately after Helopus in his 

 systematic arrangement and ( page 75) differentiates the two as follows: 



Racemi ad rachin eommunem. Cor. apice mucronato-aristata . Helopus. 

 Racemi subpaniculati. Involucrum stellato-setosum ! Eriochloa. 



Probably Trinins had not at that time seen Kunth's species and was 

 impressed by Kunth's description of an involucre of numerous hairs at the 

 apex of the pedicel and by the ring of spreading hairs shown in plate 30. 

 Later (Mem. Acad. St. Petersb. VI. Sci. Nat. 3 : - 130 and 133. 1834) the 

 species of both Eriochloa and Helopus are placed in Paspalum in the sub- 

 division Helopus. 



Oedipachne Link, Hort. Berol. 1:51. 1827. This includes a single 

 species, 0. punctata Link (1. c. ), based on Milium punctatum L. In his 

 additions and emendations (p. 273) Link directs that Oedipachne be ex- 

 punged and Helopus Trin. be inserted in its place, and in the second 

 volume (Hort. Berol. 2:199. 1833) Helopus is given as a genus with 

 Oedipachne as a synonym. Eriochloa H. B. K. seems to have been over- 

 looked by Link. 



Alycia Willd. ; Ktend. Norn. Bot, ed. 2. 1 : 66. 1840. This herbarium 

 name is listed without description, and two undescribed species, A. coarc- 

 tata Willd. and A. distachya Willd., are listed under it. Both names are 

 here referred to He lop us brachystachys but on page 747 A. coarctata Willd. 

 is referred to Paspalum polystaehyum Trin. and A. distachya to P. 

 brachystacliyum Trin. Helopus brachystachys Trin. (upon which 

 Paspalum bracJiystachyum is based) is Eriochloa distachya H. B. K. or a 

 very closed allied species, while Paspalum polystaehyum Trin. is based on 

 Eriochloa polystachya H. B. K., so that whichever species he. taken as the 

 type of Alycia this name becomes synonymous with EriocJiloa H. B. K. 

 Willdenow's herbarium name is spelled "Aglycia" by Steudel (op. cit. 

 37 ) with the same two species listed under it. 



Nees (Agrost. Bras. 16. 1829) recognizes Helopus Trin. as a genus, and 

 does not mention Eriochloa. Probably since neither of Kunth's species 

 was from Brazil Nees neglected to study the genus. 



Doell (Mart. Fl. Bras. 2 : 2 123. 1877) recognizes Helopus Trin. as a 

 genus, and includes Eriochloa H. B. K. under it. Benthani (Benth. & 

 Hook. Gen. PI. 3 : 1099. 1883) recognizes Eriochloa H. B. K. 



Nash (Bull. Torrey Club 30 : 374. 1903) takes up the name Monachne 

 Beauv. for this genus, but we do not find this name tenable. It is based 

 on M. unilateralis Beauv., an undescribed species unrecognizable from 

 the figure, which represents a branching paniculate inflorescence, though 

 the spikelets were evidently drawn from some species of Eriochloa, and 

 Saccharum reptans Lam., which is a species of Panicum allied to 

 P. urvilleanum Kunth. 



