70 



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



laminis coriaceis siccitate fuscis ellipticis, 10-15 cm. longis, 6-7.5 cm. latis, 

 basi acutis et in petiolum conspicue decurrentibus, apice breviter et obtuse cuspi- 

 datis, margine valde recurvatis, 5-nerviis, nervis summis cum costa 1-3 cm. 

 concurrentibus et cum costa supra leviter impressis (basim versus elevatis) subtus 

 prominentibus, nervis infimis basalibus inconspicuis, rete venularum utrinque 

 prominulo vel immerso; inflorescentiis 1-3 in axillis foliorum breviter racemosis 

 6-15-floris, floribus caducis, rhachi robusta 2-4 cm. longa articulationibus valde 

 incrassata, bracteis sub floribus papyraceis deltoideis 1-1.5 mm. longis subacutis; 

 pedicellis robustis sub anthesi 15-25 mm. sub fructu juvenili ad 35 mm. longis 

 basim versus bibracteolatis, bracteolis minutis; calyce carnoso sub anthesi 6-7 

 mm. longo et 8-9 mm. diametro, tubo obtuse angulato 3-4 mm. longo, limbo sub- 

 patente 5-denticulato margine leviter incrassato et inflexo, lobis haud 1.5 mm. 

 longis apiculatis, sinibus complanatis vel rotundatis; disco conspicue annulari- 

 pulvinato; corolla carnosa subgloboso-conica sub anthesi circiter 9 mm. longa et 

 8 mm. diametro, lobis deltoideis subacutis circiter 1.5 mm. longis; staminibus 10, 

 filamentis in tubum 1.5-2 mm. longum connatis, connectivis ecalcaratis, antheris 

 maturis circiter 7.5 mm. longis, thecis crassis circiter 6 mm. longis basi obtusis 

 superne in tubulos breves acutos cum rimis angustis angustatis; stylo tereti corollam 

 subaequante truncato. 



Santiago-Zamora: Cordillera Cutucu, ridge between the Ribs Itzintza and 

 Chupiasa, 4,000-4,500 ft. elev., Nov. 17-Dec. 5, 1944, Camp E-1280 (type US 

 1,989,014; dupl. NY) (epiphyte, with branches about 1 m.; leaves dark green above, 

 pale beneath; pedicels and hypanthium pale pink, the corolla coral-red). 



From its closest relative, the Colombian P. occidentalis A. C. Smith, the new 

 species is readily distinguished by its much more robust inflorescence, with 

 stouter and longer rachis and pedicels and larger flowers; the largest corollas 

 seen in P. occidentalis hardly exceed 5 mm. nor the longest anthers 3 mm. in 

 length. The Ecuadorian P. flaviflora A. C. Smith (Jour. Arnold Arb. 24: 463. 1943) 

 is less closely related to the new species, differing in its caudate-acuminate leaf- 

 blades, short inflorescence, calyx-limb with larger lobes and acute sinuses, free 

 filaments, and shorter, spurred anthers. 



Psammisia ecuadorensis Hoer. Bot. Jahrb. 42: 308. 1909. 



Canar: Near El Corazon, between S. Vicente and Rosario, 3,500 ft. elev., F. 

 Prieto CP-12 (low-growing epiphyte with pendant branches 1-3 m. long; leaves 

 dull above, shining beneath; pedicels coral-red; corolla deep crimson). 



The species is known from several Ecuadorian collections and possibly ex- 

 tends northward into Colombia. 



Psammisia fermginea A. C. Smith, Contr. U. S. Nat. Herb. 28: 391. pi. 10. 1932. 



Pichincha: Western slope of the cordillera, along the road from Quito to Sto. 

 Domingo de los Colorados, about 6,000 ft. elev., Camp E-1736 (shrub, with branches 

 3 m. long). Napo-Pastaza: Valley of the Rio Pastaza and adjacent uplands, Shell 

 Mera (east of Mera), about 3,500 ft. elev., Camp E-1701 (NY only) (large spread- 

 ing plant, in part epiphytic; flowers pink). Same locality, uplands near El Topo, 

 along trail to La Gloria, 4,000-5,000 ft. elev., Camp E-23 99 (NY only) (arching 

 epiphyte, common at lower elevations). Santiago-Zamora: Eastern slope of the 

 cordillera, valley of the Ribs Negro and Chupianza (on the trail from Sevilla de 

 Oro to Mendez), between Tres Ranchos and Chontal, 2,700-5,700 ft. elev., Camp 

 E-1566 (epiphytic vine; hypanthium pale red; corolla pale yellow at anthesis, later 

 pale red). Cordillera Cutucu, ridge ascending into central Cutucu, 4,400-4,700 ft. 

 elev., Camp E-1159 (immense climbing and epiphytic plants, some 5 m. across and 

 hanging over 10 m., common along streams on west slope of the Cutucu; pedicels 



