ERIANTHUS. — ANDROPOGONEJE (AUCT. EDUARDO HACKEL). 131 
nervis lateralibus a medio sejunetis, glabra; III: acuminata v. raro 
mucronata ut IV‘ glabra. Arista spicula sepius 3-plo longior (14— 
22 mm. longa). Palea quam gluma II^ 2—3-plo brevior, ovata, gla- 
bra. 
In Americze borealis civitatibus orientalibus a Florida (Curtiss 3627 
ex p.) usque ad New Jersey et Illinois, in occidentem versus ad Loui- 
sianam et Texas (Vinzent 134) ; in Mexico (Bourg. 2970). 
Subsp. b. brevibarbis ; spiculæ lana involucrante albida '/,—sub- 
duplo longiores. Gluma III: mutica; IV® ad '/, usque bifida, e sinu 
aristam subperfectam (columna brevissima oligospira instructam) 
exserens. Lodicul& ciliate. — Er. brevibarbis Michx. Fl. bor. am. 1, 
p. 55?, certe Elliot, Sketch, t. 1, f. 2 et aliorum autt. amer. ; Saech. 
brevibarbe Pers. Syn. 1, p. 103.? — Vagin® sepius glabr&, nodis 
longe barbatis. Ligula 1—2 mm. longa. Laminse e basi valde angus- 
tata sublanceolato-lineares, 40—80 cm. longze, 6—15 mm. late, subtus 
glaucescentes et sæpius lzeves, superne viridule, scabr&, nervis pri- 
mariis utrinque 6—10 minus prominulis pereurs@. Racemorum arti- 
culi pilis ipsis brevioribus infra apicem evanidis laxissime ciliati. Spi- 
culze 5—6 mm. longs, rufescentes; gluma I" ut in. pracedente, Hes 
nervi laterales cum medio superne conjuncti, ceterum ut in a, III: 
acuminata cum IV* glabra. Arista spicula 3-plo longior (18-20 mm. 
longa), columna glumas non superante, subula patula laxissime torta 
v. recta. Palea gluma IV* 4-plo brevior, ovata, glabra. 
In Americz bor. civitatibus Georgia (ex Ell.), Carolina (Curtiss, 
Ravenel in H. Boiss.), Alabama (Buckley), Arkansas (Engelm. in h. 
ber.). 
Subspec. e. contortus; spiculz lana albida v. fulvescente subduplo 
breviores. Gluma III* mutica, IV* ad '/, usque bifida, e sinu aristam 
plus minus perfectam exserens. Lodieule glabrze. — Er. contortus 
Elliot Sketch. 1, p. 40. Sacch. contortum Nutt. Gen. 1, p. 60: Andro- 
pogon alopecuroides Muehl. Descr., p. 285.? — Vaginæ, ligula, 
laminæ ut in brevibarbi (nisi nodi interdum glabri, laminæ ad 1 met. 
longs, usque 2 em. late). Racemorum articuli pilis albis mollibus 
articulo sublongioribus ad apicem usque ciliati. Spieule 6—7 mm. 
longæ, pallide viridulze v. rufidulze, villis involuerantibus densissimis. 
Spiculæ sessilis gluma I"* e medio acutata, margine non nisi sub apice 
inflexa, ceterum involuta, dorso pilis longiusculis adspersa, præter 
nervos carinales inconspicue 2—4-nervis ; Il“ acuta, margine superne 
ciliolata ; IH: szepius enervis, acuta, ciliata ; IV** arista spicula si 
