Tas. 5094, 
TACHIADENUS ‘CARINATUS. 
Keeled Tachiadenus. 
Nat. Ord. GENTIANEZ.—PENTANDRIA MONOGYNIA. 
Gen. Char. Calyx 5-fidus v. 5-partitus; segmentis dorso carinatis v. alatis; 
valvaribus planiusculis, acuminatis. Corolla hypocraterimorpha, nuda, decidua; 
tubo tenui, apice in faucem anguste campanulatam ampliato, eequali; limbo ex- 
panso, 5-partito; lobis paulum supra-incumbentibus. Stamina 5, fauce corolle 
inserta ; filamentis leeviusculis, eequalibus. Anthere erecte, immutatee, neque (?) 
apiculate. Ovarium annulo basilari continuo glanduloso cinctum, valvulis pa- 
rum introflexis, subuniloculare ; ovwdis ipsarum margine intus discreto quaternis 
seriebus insertis. Stylus distinctus, persistens ; stigmate indiviso, capitulato, ovoi- 
deo. Capsula bivalvis, septicida, subunilocularis ; placentis margine valvarum in- 
tus discreto insertis. Semina placentis immersa.—Suffrutices v. herbe Mada- 
gascarienses; inflorescentia terminali; floribus purpureis (albis, Griseb.) ; tubo 
corolle elongato, gracillimo. Griseb. in De Cand. 
TACHTADENUS carinatus ; caule suffruticoso tetragono, foliis ovalibus sessilibus 
trinerviis, cyma terminali bis dichotoma, calycis quinquefidi alis obverse 
semi-lanceolatis lobis linearibus, corolle tubo biunciali apice ventricoso lobos 
late ovatos acutiusculos plus duplo superante, genitalibus inclusis. 
TACHIADENUS carinatus. Grisebach, Gent. p.200. De Cand. Prodr. v. 9. p. 81. 
LisIanTuus carinatus. Lam. Dict. v. 2. p. 258. ¢. 107. f. 2. Willd. Sp. Pl. 
v. 1. p. 829. 
Native of Madagascar, and probably common enough there 
(as we have received native specimens from thence, from the late 
Professor Bojer, from Dr. Lyall, and also from M. Bouton) ; yet 
when one knows the beauty of this plant and the difficulty of 
obtaining any plants from that fertile region, one cannot be too 
thankful to the Rev. William Ellis* for having introduced this 
and several other Madagascar plants, of great rarity and inter- 
est, to our stoves, through his energy and great love of plants. 
Beautiful as are European species of the well-known Gentian 
* Author, some years ago, of ‘ Polynesian Researches,’ and more recently of 
‘Three Missionary Visits to Madagascar, in 1853, 1854, and 1856,” published by 
Murray, a work full of the deepest interest to the philanthropist and to the lover 
of natural history, clearly proving that an attention to the works of nature by no 
means detracts from his missionary usefulness. We owe to him the introduction 
of two species of the wonderful Zace-leaf to our stoves; both figured in the pre- 
sent work. 
JANUARY Ist, 1859. 
