7952] 



PLANTS COLLECTED IN ECUADOR 



75 



lanceolatis obscure glanduloso-marginatis, majoribus circiter 15 x 2 mm., intimis 

 calycem involventibus circiter 10 x 3 mm.; pedicellis subnullis, bracteolis 1 vel 2 

 lineari-subulatis circiter 7 x 0.5 mm.; calyce 6.5-7 mm. longo et circiter 4 mm. 

 apice diametro pilis minutis glandulosis strigilloso, tubo obtuse 5-angulato circiter 

 4.5 mm. longo, limbo quam tubo breviore intus glabro fere ad basim 5-lobato, lobis 

 elongato-deltoideis circiter 3x2 mm.; disco annul ari-pulvinato glabro; corolla 

 tenuiter carnosa parce glanduloso-strigillosa circiter 13 mm. longa et 4 mm. 

 diametro anguste 5-alata, alis medio circiter 0.7 mm. latis superne angustatis, 

 lobis deltoideis subacutis circiter 1 mm. longis; staminibus 10 corollam sub- 

 aequantibus, filamentis membranaceis circiter 2.5 mm. longis ut videtur connatis 

 superne obscure puberulo-marginatis, antheris circiter 10.5 mm. longis, thecis 

 4-4.5 mm. longis basi mucronatis, tubulis quam thecis leviter longioribus per 

 rimas elongatas dehiscentibus; stylo filiformi corollam subaequante, stigmate 

 minute peltato. 



Santiago-Zamora: Eastern slope and crest of main Cordillera Cutucu, 5,200 ft. 

 elev., Nov. 25-Dec. 2, 1944, H. Jorgensen CuJ-38 (TYPE US 1,988,919; dupl. NY) 

 (shrub 3 m.; flowers red). 



The generic position of this species presents difficulties not unfamiliar in the 

 Andean Vacciniaceae. Although it is clearly of the general affinity of Thibaudia, 

 it is perhaps best referred, because of its winged corolla, to the recently described 

 genus Calopteryx (Jour. Arnold Arb. 27: 100. 1946), based on a single species 

 from low elevation near the coast in El Valle, Colombia. From the only known 

 species, C. insignis, C. sessiliflora differs in its leaf-blades with more highly 

 concurrent secondaries, its greatly reduced 1- or 2-flowered inflorescences sub- 

 tended by conspicuous lanceolate bracts, its subsessile flowers, its much shorter 

 and more narrowly winged corolla, and its anthers with comparatively short tubules. 

 The discovery of this entity certainly weakens the characters which separate 

 Calopteryx from Thibaudia, but the former concept may perhaps be maintained 

 for the present. 



Thibaudia lateriflora A. C. Smith, sp. nov. 



Frutex scandens praeter flores ubique glaber, ramulis gracilibus teretibus 

 inferne radicantibus; petiolis gracilibus rugulosis subteretibus 6-8 mm. longis 

 crassis (2-3 mm. diametro); laminis subpapyracei s in sicco fusco-viridibus oblongo- 

 ellipticis, 17-26 cm. longis, 7-10 cm. latis, basi obtusis, apice in acuminem 

 gracilem ad 25 mm. longum subito caudato-attenuatis, margine inconspicue re- 

 curvatis, sub'us obscure et sparse glanduloso-strigillosis, plerumque 7-nerviis, 

 nervis secundariis adscendentibus cum costa ad 3.5 cm. concurrentibus ut costa 

 supra leviter impressis subtus prominentibus, nervis extimis inconspicuis, rete 

 venularum .intricato supra subimmerso subtus prominulo; inflorescentiis in glome- 

 rulos ramulis defoliatis enatos aggregatis, bracteis numerosis obscuris suffultis, 

 rhachi gracili minuta haud 2-3 mm. longa ut videtur plerumque uniflora, bracteis 

 floriferis oblongis obtusis 1-2 mm. longis; pedicellis gracilibus 6-8 mm. longis 

 ut calyce obscure puberulis basim versus bibracteolatis, bracteolis oblongis 

 obtusis 1-1.5 mm. longis; calyce turbinato cum pedicello continuo sub anthesi 

 4-5.5 mm. longo et apice circiter 3 mm. diametro, obscure albido-puberulo etiam 

 inconspicue glanduloso-strigilloso, tubo alis carnosis haud 0.3 mm. latis inconspicue 

 alato, limbo erecto 1-1.5 mm. longo, lobis 5 inconspicuis ovato-denticulatis haud 

 0.5 mm. longis, sinibus obtusis; corolla tenuiter carnosa 5-angulata (angulis sub- 

 alatis alis haud 0,2 mm. latis) sub anthesi 19-22 mm. longa circiter 4.5 mm. diametro 

 obscure puberula mox glabrata, lobis 5 oblongis circiter 1.5 mm. longis; stamini- 

 bus 10 corollam subaequantibus, filamentis ligulatis subcohaerentibus circiter 3 



