AMERICAN GRASSES DESCRIBED BY LINNEZUS. 119 
Panicum hirtellum L. Syst. Nat. ed. 10. 2: 870. 1759. 
The type, from ‘Br,’ is Oplismenus hirtellus (L.) Roem. & Schult., and is more 
fully described in Amoen. Acad. 5: 391, 1759. The axes of the spikes are hispid, as 
also the spikelets, but not theaxisof the inflorescence. Theawns are about | cm. long. 
Panicum colonum I. Syst. Nat. ed. 10, 2: 870. 1759, 
There are two sheets in the herbarium ranked by Linneus, one being from ‘Br. 
Both are P. colonum as generally understood, though Munro states that one is P. 
crusgalli, 1 should consider the specimen from Browne to be the type, as it answers 
better to Linnzeus’s description, Linnzeus cites Sloane’s plate 64, figure 2, but does 
not use his diagnosis, hence Sloane’s plant is not the type. 
ce) 
Panicum reptans I.. Syst. Nat. ed. 10. 2: 870. 1759, 
This name should replace P. grossarium, as indicated below under that title. 
Panicum grossarium L. Syst. Nat. ed. 10. 2: 871. 1759. 
Nospecimen or locality is cited here by Linnweus but the plant is more fully described, 
later, in his list of Jamaica plants.¢ The specimen in the herbarium is from ‘‘ Br.” 
The word ‘“‘reptans” was written on the sheet and then crossed out. Panicum reptans 
L. Syst. Nat. ed. 10, 2: 870, 1759, has been regarded as of uncertain identity. The 
description applies to this specimen and, as this name is omitted in all the later works 
of Linnzeus, it is quite probable that he described the same plant twice. The descrip- 
tion of Panicum replans, placed between P. hirtellum and P. sanguinale, is as follows: 
“P. panicula racemis simplicibus alternis secundis, flosculis geminis muticis: pilis 
rarioribus involucratis.’” On the next page is the character of Panicum grossarium 
(between 2. miliaceum and P. latifolium); ‘+P. panicula ramis simplicibus, floribus 
geminis: pedicello altero brevissimo; altero longitudine floris.’’ The specimen is 
not what has been considered Panicum grossarium by most authors but is Panicum 
prostratum Lam. Hl.Gen. 1: 171. 1791. TI propose then to take up the name Panicum 
reptans L. tor the grass which has been known as 7. prostratum Lam. Linnzeus’s de- 
scription quoted above applies perfectly, even to the occasional long hairs on the 
rachis. I am assuming that Richter is correct in placing the date of publication of 
the tenth edition of the Systema in May, 1759, and the dissertation entitled ‘“ Pugillus 
Jamaicensium plantarum” in December, 1759. In the latter work P. grossarium is 
described, but P. reptans isnot mentioned. 
The plant which has been called Panicum grossarium and for which a different 
name must be taken up is Panicum “een Trin. Gram, Pan. 146. 1826, 
Panicum divaricatum L. Syst. Nat. ed. 10. 2: 871. 1759 
The specimen is from “Br.’’ It is the sina leaved clambering form which is also 
found in southern Florida. 
Milium punctatum L. Syst. Nat. ed. 10. 2: 872. 1759. 
The type, from “ Br,”? is Eriochloa punetata (L.) Hamil. Awn about | mm. long; 
axis pubescent but not villous; no conspicuous hairs around the base of the spikelet. 
Agrostis mexicana IL. Mant. 1: 31. 1767 
Cultivated, “HU. This is Wihlenbergia mericana (L.) Trin. 
Agrostis virginica ]. Sp. Pl. 63. 1753. 
The Linnwanspecimen, which is the type, is Sporobolus virginicus (L.) Kunth.  Lin- 
neeus cites after his own diagnosis, *Clayt. virg. 507.°° Clayton’s specimen is the 
same species. This number is not mentioned by Gronovius in the first edition of his 
Flora Virginica. In the second edition (page 14. 1762) it occurs under Uniola sub- 
spicata, etc. This number of Clayton is cited by Linneus under Uniola spicata also, 
a Amoen. Acad. 5: 392 7 
