HITCHCOCK AND CHASE—-NORTH AMERICAN PANICUM. 97 
Chase 3953; Key Largo, Chase 3935, Curtiss in 1884; Upper Metacumbe Key, 
Chase 3915; Santa Rosa Island, Tracy 6508; without locality, Chapman, Rugel 
444. 
Louisiana: Battledore Island, Tracy & Lloyd 464. 
BawAMAs: Great Bahama, Britton & Millspaugh 2739; New Providence, Britton 
& Brace 307, 493 (all in Field Mus. Herb.). 
Tenera.—Perennials; culms slightly compressed, wiry, the internodes much elon- 
gated; ligules membranaceous, about 0.5 mm. long; blades linear, at the base 
narrower than their sheaths; panicles small, narrow, nearly simple; spikelets 
short-pediceled, glabrous or nearly so; palea of sterile floret a small nerveless 
scale; fruit elliptic, smooth and shining. 
Panicles 3 to8 cm. long; spikelets 2.2 to 2.8mm. long, pointed....... 48. P. tenerum. 
Panicles not over 2 cm. long; spikelets not over 1.6 mm. long, blunt. 49. P. stenodes. 
48. Panicum tenerum Beyr. 
Panicum tenerum Beyr. in Trin. Mém, Acad. St. Pétersb. VI. Sci. Nat. 1: 341. 
1834. The citation given is ‘Georg. Amer. (in paludibus nemorum cresc.) BEYRICH 
ms.’’ The label accompanying the type specimen in the Trinius Herbarium reads - 
‘*Panicum tenerum n, sp. Georgia, in paludibus nemorum,”’ 
and ‘‘mis. Beyrich 1834” added in Trinius’s writing. A 
second ticket bears the name ‘‘ Pan. tenerum Beyr.”’ 
Panicum anceps strictum Chapm. Fl. South. U. 8. 573, 
1860. ‘‘Damp sterile soil, Florida.’ In the Chapman 
Herbarium at Biltmore is a specimen labeled ‘‘P. anceps 
strictum from the original locality Apa[lachicola] 1887” 
and in the Chapman Herbarium in that of Columbia Uni- 
versity is a similar specimen labeled ‘‘ Panicum anceps L. 
var. strictum, Southern Flora. Florida,’’ with nothing to 
indicate whether or not it was collected before the date of 
publication. In the National Herbarium are two more specimens from Chapman 
also without date, All the specimens belong to P. tenerum, hence there is no doubt 
as to the identity of Chapman’s variety, though whether or not the type be in exist-. 
ence can not be determined. 
This species was described under the name of P. stenodes Griseb. by Vasey, ¢ Chap- 
man,” Scribner, ¢ and Nash.@ 
Fig. 89.—P. teneruin. From 
type specimen. 
DESCRIPTION. 
Plants in small tufts from a knotted crown, 40 to 90 cm. high, olivaceous; culms erect, 
stiff and wiry, producing small, solitary panicles from the upper nodes or remaining 
simple, glabrous; sheaths much shorter than the internodes, the upper glabrous, the 
lower sparsely to copiously papillose-pubescent toward the summit with soft, spreading 
or reflexed hairs; blades 4 to 15 cm. long, 2 to 4 mm. wide, (the uppermost much 
reduced), erect, firm, drying involute at least toward the summit, pilose on the upper 
surface toward the base, or the lower sometimes on both surfaces; terminal panicles 
rather short-exserted, 3 to 8 cm. long, rarely over 5 mm. wide, the short, appressed 
subracemose branches bearing rather crowded spikelets throughout their length, th 
«U.S. Dept. Agr. Div. Bot. Bull. 8: 25. 1889. 
5 TL. South. U. 8. ed. 3. 583. 1897. 
eU,S. Dept. Agr. Div. Agrost. Bull. 7: 64. /. 46. 1897; op. cit. (ed. 2) 52. f. 46. 1900. 
@Small, I'l. Southeast. U. 8. 92. 1903. 
41616°—voL 15—l10——7 
