528 Prof. Dow's Descriptions of Indian Gentianee. 
Ophelia lurida (malè lucida). Nob. in G. Don Syst. Gard. & Bot. iv. p. 179. 
Swertia lurida. Royle MSS. 
Habitat in Emodi montibus ad Mussooree. Royle. ©. 
Herba amarissima. Radix fibrosa, annua, flava. Caulis erectus, rigidus, 
ramosissimus, tetragonus, fistulosus, glaber, viridis, bipedalis: angulis 
elevatis, membranaceis, angustissimis. Folia radicalia petiolata, spathu- 
lata, obtusa, patentia, sesquipollicaria; caulina superiora et ramea am- 
plexicaulia, cordata, acuta, 5-nervia; infima oblonga, basi angustata, 
caulis apicem versus sensim minora. Flores parvi, copiosissimi, panicu- 
lati. Calyz 4-partitus: segmentis lanceolatis, acutis. Corolla calyce sub- 
dupló longior, lurido-purpurea, 4-partita: laciniis ovato-lanceolatis, acu- 
minatis, 5-nerviis, basi biglandulosis, glabris: glandulis linearibus, di- 
stantibus. Stamina 4, corolla breviora : filamenta subulata, glabra: an- 
there cordate, mucronulate. Pistillum staminibus longius: ovarium 
ovatum, membranaceum, 1-loculare: stylus brevis: stigmata subcapitata, 
minuté papillosa. Capsula parva, ovata, membranacea. „Semina exigua, 
angulata, leevia, pallidé fulva. 
Gen. VIII. HALENIA. Borck. 
SWERTIÆ SP. L. et Auctt. 
Calyx 4—5-partitus. Corolla campanulata v. tubulosa, 4—5-fida: laciniis 
basi calcaratis! Stamina sinubus corollæ inserta. Stigma bilobum. 
Capsula sessilis, membranacea, 1-locularis. Semina marginalia, subro- 
tunda v. oblonga, ventricosa, lævia. 
Herbæ (asiaticæ et americanæ) annuæ v. perennes, floribus umbellatis purpureis 
v. luteis. 
This constitutes one of the most distinct genera in the whole family. The 
petals, in place of having the fringed glands of Swertia, are produced behind 
into a hollow spur, which forms an obvious and beautiful mark to discrimi- 
nate the genus from the rest of its coordinates. Of the twelve species known 
to us, two are Asiatic, and the rest American; and of these latter, five are 
natives of Peru and New Granada, and perennial. 
