Chase — Notes on Genera of Panicese. IV. 125 



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

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

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

 Helopus Trin. 



Trinius places Eriochloa H. B. K. immediately after Helopus in his 

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



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

 Racemi subpaniculati. Involucrum stellato-setosum ! Eriochloa. 



Probably Trinius 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 tbe pedicel and by the ring of spreading hairs shown in plate 30. 

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

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

 division Helopus. 



Oeilipachne Link, Hort. Berol. 1:51. 1827. Tins 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. ; Stend. 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 Helopus brachystachys but on page 747 A. coarctata Willd. 

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

 br achy stach yum Trin. Helopus brachystachys Trin. (upon which 

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

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

 Eriochloa polystach'ya H. B. K., so that whichever species be taken as the 

 type of Alycia this name becomes synonymous with Eriochloa 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. Bentham (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. 



