Plate 2554. 



TACHIADENUS ELATUS, Hemd. 



GENTIANACE.E. 



T. elatus, Hemsl.{sp. nov.) ; inter species afEnes magnitudine foliorum 

 et longitudine florum insignis. 



Frutex 4-5 ped. altus (Gerrard), undique glaber, caulibus vel ramia 

 rectissimis teretibus, internodiis quam foliis brevioribus. Folia petio- 

 lata, subcoriacea, ovatolanceolata, cum petiolo circiter unciali 4-6 poll, 

 longa, acute acuminata, basi subrotundata, distinct e trinervia. Florpg 

 ad apices ramorum dense cymosi, erecti, breviter pedicellati, cymis 

 3-12-floris. Sepala fere libera, arete imbricata, coriacea, persistentia, 

 margine tenuiora, lanceolata, acuta, vix carinata, 7-9 lin. longa. 

 Corona hypocrateriformis, 5-7 poll, longa, tubo a picem versus gradatim 

 ampliato ; lobi ovati, acuti, patentee. Stamina prope faucem affixa, 

 inclusa, filamentis brevissimis. Stylus brevissime exsertus. Capsida 

 oblongo ovoidea, 1 2-15 lin. longa, basi subito angustata sed vix stipitata, 

 apice stylo indurate coronata ; semina numerosissima, minuta, globosa, 

 conspicue foveolata. 



Madagascar : without locality, Gerrard ; Humblot, 7 ; Baron^ 

 6682; Curtis. 



This is one of a number of Madagascar plants remarkable for the 

 length of the tube of the corolla. Ixora siphonantha, Oliv. (plate 2236 

 of this work), is another example ; and Angrwcum sesqv ipedale, Thouars 

 (Bot. Mag. t. 5113), exhibits a similar phenomenon in the prodigious 

 length of its spur. — VV. Botting Hemsley. 



Fig. 1, upper part of corolla-tube laid open to show attachment of stamens ; 2, 

 anthers ; 3, ovary ; 4, stigma. All enlarged. 



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