76 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [ Vol. 8, No. 1 



mm. longis margine superne obscure puberulis, antheris 18-19 mm. longis, thecis 

 levibus 10-11 mm. longis, tubulis 8-9 mm. longis per rimas elongatas dehiscenti- 

 bus; stylo filiformi leviter exserto, stigmate minute peltato. 



Santiago- Zamora: Cordillera Cutucu, ridge ascending into central Cutucu, 

 2,600 ft. elev., Nov. 17-Dec. 5, 1944, Camp E-1141 (coll. F. Prieto) (TYPE NY; 

 dupl. US) (climbing; leaves dark green above, paler and shining beneath; calyx 

 green-ribbed; corolla ribbed, crimson toward base, bright green distally). 



The fact that the calyx is continuous with the pedicel suggests that this 

 species is an ally of the widespread T. floribunda H. B. K., from which it differs 

 in such obvious respects as its broader leaves, greatly reduced and glomerulate 

 inflorescences, narrowly winged calyx and corolla, and longer corolla and stamens. 

 That the corolla is winged (although very obscurely so) indicates an affinity of 

 the new species with Anthopterus Hook., where, however, the wings are obvious 

 and manifestly veined. From another allied genus, Calopteryx A. C. Smith, T. 

 lateriflora is excluded by its continuous calyx and also by its very narrow corolla 

 wings. The discovery of such new species as this and the above-described Calop- 

 teryx sessiliflora, however, suggests that the winged corolla cannot be safely 

 utilized as a character of generic value in the family, 



Thibaudia clivalis A. C. Smith, sp„ nov. 



Frutex epiphyticus ubique praeter antheras glaber, ramulis gracilibus junioribus 

 obtuse angulatis vetustioribus teretibus; foliis subsessilibus, petiolis 1.5-3 mm. 

 longis, laminis coriaceis subbullatis in sicco fusco-brunneis, oblongis vel obovato- 

 oblongis 7.5-12.5 cm. longis, 4-8 cm. latis, basi manifeste cordatis et subauricu- 

 latis, apice rotundatis, margine recurvatis et sinuato-crenatis, costa valida supra 

 sulcata vel basim versus elevata subtus prominente, nervis lateralibus utrinsecus 

 3-5 supra impressis subtus valde elevatis, eis basim versus validioribus curvato- 

 adscendentibus, rete venularum conspicuo utrinque obtuse prominulo; inflores- 

 centia completa non visa; pedicellis teretibus rugulosis ante anthesin circiter 

 10 mm. longis basi bibracteolatis superne incrassatis, articulatione conspicuo, 

 bracteolis pentagonis circiter 2.5 mm. longis latisque subacutis; calyce turbinato 

 6-6.5 mm. longo apice 4-5 mm. diametro, tubo ruguloso obtuse angulato circiter 

 2.5 mm. longo, limbo suberecto carnoso quam tubo longiore 5-lobato, lobis late 

 deltoideo-ovatis circiter 1x2 mm. apiculatis, sinibus obtusis; corolla (videtur 

 paullo ante anthesin) urceolato-cylindrica carnosa 8-9 mm. longa basim versus 

 circiter 4 mm. diametro superne angustata, lobis 5 deltoideis circiter 1 mm. longis 

 acutis; staminibus 10, filamentis liberis ligulatis minutis ad 1 mm. longis margine 

 superne pilosis, connectivis alternatis margine copiose albido-villosis (pilis 

 circiter 0.5 mm. longis), alteris obscure puberulis, antheris circiter 6 mm. longis, 

 thecis basi obtusis, tubulis quam thecis paullo brevioribus per rimas ovales magnas 

 dehiscentibus; stylo tereti corollam subaequante truncate 



Santiago-Zamora: Cordillera Cutucu, east-trending slope from top of ridge down 

 toward the Itzintza, 4,800-5,800 ft c elev., Nov. 17-Dec. 5, 1944, Camp E-1384 

 (TYPE NY) (epiphyte; leaves dark green above, paler beneath, the veins red; 

 young flowers pink). 



Although the cited specimen is not entirely satisfactory, lacking attached or 

 complete inflorescences, it- obviously represents an undescribed species of Thi- 

 baudia, In its apparently rigidly carnose corolla, free filaments, erect elongate 

 calyx-limb, and leaf-texture it suggests the Peruvian T. engleriana Hoer c From 

 that species, however, T. clivalis differs in having its branchlets less sharply 

 angled and its leaves subsessile, larger, and more deeply cordate at base. The 

 flowers of the new species are not entirely mature, but they are comparatively 



