M E MOIRS OF THE X EW STORK BOTANICAL GARDEN 



[vol. 10 



villosulous within to above a glabrous or papillate basal portion. Corolla-lobes 5, 

 contorted, shorter than the tube. Stamens 5, included, inserted about half-way 

 up corolla-tube. Anthers dorsifixed, linear-oblong, apiculate, subsagittate at base. 

 Free portion of filaments short, the vascular tissue extending prominently as a 

 ridge to base of corolla-tube. Style equaling or much shorter than corolla-tube, 

 glabrous; annular disk at base of style short; stigmas oblong-ovate or oblong, 

 glabrous. Capsule septicidally dehiscing from the apex, slightly ligneous. Seeds 

 numerous, minute, irregularly many-sided, angled, finely scrobiculate, 1-2 mm 

 long. 



Type species : Dcndrosipanea spigelioides Ducke. 



Key to the Species of Dendrosipanea 



1. Corolla-tube 9-12 mm long; corolla-lobes 8-9.5 mm long; leaf -blades mostly rounded 

 or broadly obtuse at apex, oblong- to oblaneeolate-spatulate, mainly broadest 

 above the middle; leaf -blades generally revolute-margined, the lateral nerves and 

 midrib of upper surface markedly sulcate. 1. D. revoluta. 



1. Corolla-tube 15-20 mm long; corolla-lobes 13-16 mm long; leaf -blades acute to 

 acuminate, elliptic-lanceolate, oblong-lanceolate, or lance-ovate, broadest at the 

 middle; leaf -blades plane, scarcely or not at all revolute-margined, the lateral 

 nerves and midrib of upper surface not sulcate. 

 2. Calyx-lobes linear-lanceolate, oblanceolate, or spatulate-oblong, equaling to 5 

 times exceeding length of hypanthium, 2-9 mm long, mostly unequal in length; 

 pedicels, rachis of inflorescence, outer surface of hypanthium, calyx-lobes, and 

 corolla-tube strigillose; branches, outer surface of stipules, and lower surface 

 of leaf -blades liirtellous. 2. J), wurdackii. 



2. Calyx-lobes triangular-lanceolate, less than or at most equaling length of hypan- 

 thium, 1.5-2 mm long, mostly equal; pedicels, rachis of inflorescence, outer 

 surface of hypanthium, calyx-lobes, and corolla-tube glabrous or subglabrate; 

 branches, stipules, and lower surface of leaf-blades glabrous or glabrate. 



3. D. spigelioides. 



1. Dendrosipanea revoluta Steyermark, sp. nov. Fig. 71. 



Frutex 0.5-2 m, ramulis manifeste hirtellis ; nodis superioribus paullo viscosis ; 

 stipulis triangulari-ovatis acuminatis vel medio bifidis 2-4 mm longis extus irreg- 

 ulariter strigillosis hispidulo-ciliolatis ; f oliis petiolatis, petiolis 2-6 mm longis 

 anguste marginatis supra glabris vel paullo hispidulis subtus manifeste hirtellis, 

 laminis subcoriaceis subtus pallidioribus valde revolutis anguste oblongo- vel 

 oblanceolato-spatulatis basi valde cuneatim angustatis apice plerumque rotundatis 

 vel late obtusis 3-9.5 cm longis 1-3.5 cm latis supra glabris vel paullo asperulo- 

 hirtellis*subtus parce vel sat dense pilosulis supra costa media nervis lateralibus- 

 que manifeste sulcatis subtus elevatis, nervis lateralibus utroque latere 7-9 ; 

 inflorescentia terminali vel axillas supremas terminanti basi demum in cincinnos 

 confertos desinenti composita trichotoma 1.5-4.5 cm longa 2.5-7 cm lata, bracteis 

 lanceolatis vel triangulari-ovatis acutis vel acuminatis 1.5-2.5 mm longis, eis basi 

 lineari-lanceolatis ad 5 mm longis parce vel densius hirtellis hispidulo-ciliolatis ; 

 pedicellis 1-4 mm longis plus minusve dense hispidulis; calycis lobis 5 sub- 

 aequalibus vel inaequalibus lineari-lanceolatis, oblanceolatis vel spatulato-oblongis 

 apice acutis obtusis vel rotundatis 2-9 mm longis 0.7-3.5 mm -latis extus parce 

 vel moderatim hispidulis intus glabris vel in parte inferiore hispidulis marginibus 

 hispidulo-ciliolatis; calycis tubo (hypanthio) subturbinato 2-3 mm longo apice 

 1.5-2.8 mm lato; corolla alba l^pocrateriformi, tubo 9-12 mm longo basi ca. 

 2 mm lato supra 3-4 mm lato extus parce vel plerumque moderatim strigilloso 

 vel hirtello intus. in parte basilari 2-3 mm glabra vel papillosa excepta aliter 



