118 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Panicum clandestinum L. Sp. PI. 58. 1753. 



The type, from "K", is the autumnal state of this species as commonly understood. 

 Linnaeus also cites Sloane, Hist. 1: 120. pi. 80, which is Hackelochloa granulans (L.) 

 Kuntze (Manisuris granulans Sw.), but the description of Linnaeus does not apply to 

 this. 



Panicum capillare L. Sp. PI. 58. 753. 



The specimen is from "H U." Since Linnaeus gives no description of his own, 

 but bases the name on "Gron. virg. 13, ' ' the type is Clayton no. 454. This, which is the 

 same as the Linnaean plant, is the broad-leaved form with ample panicle, as described 

 in Britton's Manual. Linnaeus's citation of Sloane b is Panicum trichoides Sw- 

 A specimen in the Stockholm herbarium marked "K" by Linnaeus is P. philadelphi- 

 cum Bernh. 



Panicum latifolium L. Sp. PL 58. 1753. 



There are two plants from "K" upon the sheet on which Linnaeus has written the 

 name. The left-hand plant is Panicum macrocarpon LeConte; the right-hand 

 plant is Panicum clandestinum L., both in the vernal state. Pinned to this is a sheet 

 of Panicum divaricatum L., but Linnaeus has not written the name upon this. There 

 is also a third sheet upon which Linnaeus has written the name and "Br." This is 

 I'u nil' um oryzoidesSv?., but it should be excluded from consideration, as Linnaeus appears 

 t<i have received Browne's plants after he prepared his Species Plantarum; at least he 

 does not cite Browne's specimens in the first edition. 'Linnaeus c cites Sloane, Hist. 

 Jam. 1: 114. pi. 71. f. 3, the species referred to being now called Panicum sloanei 

 (iriseb. It is the broad-leaved form with large panicle as distinguished from P. 

 divaricatum L. Linnseus** gives a rather extended description, which applies to the 

 first sheet mentioned above and not to the others. It would apply, I think, to 

 either of the two plants upon this sheet, but rather better to the left-hand plant 

 i P. macrocarpon LeConte). It has wider blades and the hairs around the base of the 

 blades are as described: "Folia latitudine Commelinae ad fauces amplexicaulia; 

 extus collo circum fauces villoso, etiam basi foliorum margine pilosa." Further- 

 more, he has already described Panicum clandestinum. The left-hand plant is there- 

 fore taken as the type and the name Panicum latifolium L. will stand for what we 

 have been calling Panicum macrocarpon LeConte. Some botanists have applied 

 the name P. latifolium to the Sloane plant, but Sloane 's polynomial is a synonym 

 incorrectly cited. It should be noted that Sloane 's polynomial is the second syno- 

 nym given by Linnaeus, the first being from Morison's History, which probably is P. 

 boscii, but certainly is not the Sloane species. The plant described as Panicum lati- 

 folium by Gray and other early American botanists differs from P. macrocarpon 

 LeConte in having bearded nodes and larger spikelets. This is described in Britton's 

 Manual as P. porterianum Nash, but an earlier name is P. boscii Poir., the type of 

 which is in the herbarium at Florence. 



Panicum virgatum L. Sp. PI. 59. 1753. 



The type sheet bears the number 578 and Gronovius's polynomial which accompa- 

 nies this Clayton number in the Flora Virginica. 6 It is the species described in our 

 manuals as Panicum virgatum. Pinned to this is a sheet of the same species bearing 

 the number 606 and Gronovius's polynomial corresponding to this number of Clayton 

 in his Flora. Linnaeus has written the name upon the first sheet only. 



oSp. PL 58. 1753, and ed 2. 86. 1762. <*Op. cit. 59. 



&Hist. Jam. 1: 115. pi. 72. f. 3. «2: 133. 1743. 



cSp. PI. 59. 1753; ed. 2. 87. 1762. 



