Tab. 7907. 

 isoloma erianthum. 



Native of Colombia. 



Nat. Ord. Gesnerace*. — Tribe Gesneke^e. 

 Genus Isoloma, Decne. ; {Benth. et Hook.f. Gen. Plant, vol. ii. p. 1001.) 



Isoloma erianthum ; fruticulus 4-pedalis (Hartweg) sed foraan herba perennia 

 rhizomatibua hypogaei8 squamosis, squamis confertis carnoais orbicularibua 

 compreaais sanguineis, caulibus erectia aimplicibua crassi8 aubcarnosis 

 dense fulvo-lanatis, foliia oppoaitia craaaia longe petiolatis ovato-lanceo- 

 latia cum petiolo 4—6 poll, longia acutia basi cuneatia interdum leviter 

 obliquia crenato-dentatia supra hispidulia subtua Ianatia costa atque 

 venia primariia crassiusculia subtua conapicuia, floribua l§-2 poll, longia 

 velutinis cinnabarinia inaxillis foliorutn superiorum fasciculatia pendulis, 

 pedicelli8 ebracteatis flores Eequantibua vel longioribua, calycis parvi atro- 

 rubri lobia ovatia acutia tubo vix longioribua, corollaa tubo leviter curvato 

 ventricoso apice leviter conatricto, limbi lobia parvia rotundatia aub- 

 aaqualibua plania divaricatia 3 inferioribu8 maculatia, staminibua 4 didy- 

 namia incluaia ima basi corollaa affixia filamentia filiformibua glabria 

 antheris glabria per paria cobaerentibua vel conniventibua, ataminodio 

 minuto subulato, diaci glandulia 5 reniformibus, ovario apice villosisaimo, 

 stylo pubeacente apice leviter recurvo, Btigmate parvo bilamellato. 



Isoloma erianthum, Decne. in Rev. Sort. 1848, p. 465 (nomen iantum). 



Geaneria eriantha, Benth. PL Hartw. (18 16), p. 228. 



Brachyloma erianthum, Hanst. in Linnsea, vol. xxix. p. 573. 



Kohleria eriantha, Hanst. in Linnsea, vol. xxxiv. p. 442. 



The genera of the Gesneraceae have been so diversely 

 defined and limited by different botanists at different 

 periods that it is difficult to understand what really con- 

 stitutes a genus in this natural order. Bentham first used 

 the name Isoloma (PI. Hartw. p. 229) to designate a 

 section of Gesneria (sic), in which, however, he did not in- 

 clude the species here figured. Decaisne (in loco supra 

 citato) raised it to generic rank, and enumerated the 

 species, previously referred to various genera, which he 

 considered to belong to it. Bentham and Hooker adopted 

 it, with some modifications in the " Genera Plantarum " 

 (vol. ii. p. 1001), and as there constituted it comprises 

 between sixty and seventy species, all native of Central 

 and South America, ranging from Mexico to Bolivia and 

 Peru, and mostly growing at considerable elevations. 



Isoloma is technically distinguished from the neighbour- 

 ing genera Diastema and Ilouttea by the open aestivation of 

 August 1st, 1893. 



