Notes on Plants at Roraima. 207 
pollicares ; perianthii segmenta temp, florif. acutata persis- 
tentia rigida. Brafteae ovato lanceolatae appressae. 
Nearly allied to T. falcata, W. (T. frigida H.B.K.) from 
which it differs in its strict inflorescence of longer pedicels 
flowers. 
Schomburgk describes the leaves as margined with red. 
257. Xyris Fontanesiana, Kth. 5400 feet. 
62. Xyris setigera, Oliv. sp. nov. Subacaulis foliis linearibus se- 
toso acuminatis marginibus minutissime setuloso scabridis 
scapo foliis 4-5 plo longiore stricto gracillimo subtereti glabro 
capitulo ovoideo paucifloro brafteis coriaceis obtusis ovatis 
v. ovato ellipticis staminodiis ad faucem corollas insertis 
bipartitis pencillatis, antheris filamento libero longioribus. 
Roraima, 4,000 feet. E. F. im Tkurn. 
Folia 1-2 poll, longa, aVaV P°N- I 3 * 3 - Scapi 5-7 poll, 
longi 1 v. 2 ex una radice ; vagina carinata angusta foliis 
pusillo longior. Bra&eas interiores cymbiformes oblongo 
elliptica obtusse v. marginatse } poll, longae. Sepalia late- 
ralia linearia complicata anguste carinata, carina obsolete 
denticulata. 
240. Xyris witsenioides, Oliv., n. sp. Caulescens caule decum- 
benti subscapo saspius dichotomo, foliis rigidis distiche 
arete inbricatis linearibus longitudinaliter striatis glabris 
ad apicem acutissimum gradatim angustatis, basi vaginante 
scariosa spadicea, scapo gracili foliis 3-5 plo longiore capi- 
tulis paucifloris brafteis glabris obtusis v. interioribus 
majoribus emarginatis, sepalis lateralibus incurvis rigidis 
carinatis carina scabriuscula, staminodiis flabellatim dilatatis 
longe penicellata-plumosis, ovario apice rostrato rostro 
persistente. Roraima : Ledge, 7,300 feet. E. F. im Thurn. 
Folia 2^ poll, longa 1 lin. lata leviter falcatim incurva. 
Scapus in dichotomiis solitarius compressiusculus v. sub- 
angulatus, 6-9 poll, longus ; vagina foliis brevior. Capitula 
\ poll, longa brafteis haud arfte imbricatis. 
Singular in the Witsenia-like habit of its stout stems, in 
our specimens 3-4 ins (ranging to 6-8 ins. E. F. im Thurn.) 
in length, lateral branches being given off immediately 
under the solitary scapes. 
