1957] 



THE BOTANY OF THE GUAYANA HIGHLAND—PART II 



343 



acutae, extremitate obtusa vel acuta, laminarum lateribus ambobus tenuiter 

 venulosis, costa plana supra, infra salienti. Inflorescentiae terminales, composito- 

 corymbosae (ramulis racemosis), minute strigulosae, 5-7 cm longae, bracteis 

 citius caducis; pedicellis 9-10 mm longis, minute striguloso-velutinis, bracteolis 

 oblongis, reflexis, ad apicem rotundatis, crasso-carnosis, subnavicularibus, 

 striguloso-velutinis extus, intus leviter minuteque strigulosis, ad hypanthii basem 

 adhaerentibus. Hypanthium cylindricum, 5-7.5 mm longum, minute strigulosum, 

 sepala 5, subaequalia, subulato-lanceolata, 6-8 mm longa, 1.7-2.0 mm lata, 

 acuminata, leviter strigulosa extus, intus glabra; petala 5, subaequalia, subulato- 

 lanceolata, 3-3.5 mm longa, 0.8 mm lata, acuta, ad dorsum leviter strigulosa. 

 Stamina 10, libera, filamentis ca. 16 mm longis, subulatis, glabris, antheris 4-4.5 

 mm longis, 1.5 mm latis, oblongo-fusiformibus, glabris. Stigma peltato-capitatum, 

 minute papillatum, stylus ca. 17 mm longus, glaber, ovarium oblongum, 8 mm 

 longum, 2 mm latum, velutinum, pluriovulatum, subsessile, stipite ad hypanthii 

 murum adnatum, glabrum. Fructus oblongus, glaber, 9 cm longus, 2.5 cm latus, 

 4-5-seminifer, seminibus ovalibus, compressis, fuscis, 12-14 mm longis, 9-10 

 mm latis. 



TYPE: small tree 4-7 m tall. Fruit bronze-green; buds tan. Petals pinkish, 

 filaments greenish, anthers white. Leaves thin-coriaceous. Occasional in open 

 scrub. Cafio Negro Basin, north slopes and ridges, Cerro Duida, 2000-3000 m 

 alt., Terr. Amazonas, Venezuela, Nov. 23, 1950, Bassett Maguire, Richard 5. 

 Cowan & John J. Wurdack 29667 (NY; isotype, K). Paratypes: same data and 

 collectors 29665 and 29666 (NY). 



Dicymbe duidae is easily separable from its only relative, D. uaiparuensis , 

 by the latter's more conspicuous apical gland on the bracteoles and the larger 

 number of pairs of leaflets; there is also a difference in pubescence on the 

 petals, .and the degree of union between bracteoles and the hypanthium furnish 

 additional distinguishing characters. 



Excluded species 



Dicymbe psilophylla (Harms) Dwyer, Ann. Missouri Bot. Gard. 41 : 254. 1954. 

 Tacbigalia psilophylla Harms, Notizbl. Bot. Gart. Berl. 6:305. 1915. 



Dwyer in transferring Harms' species cites Riedel 804, the type collection 

 number, and a Bondar collection, saying "The glabrous to subglabrous filaments 

 of the stamens (fide Harms), the large reniform stipules, and the very long cigar- 

 shaped fruits leave no doubt that this is a species of Dicymbe.** I have examined 

 this same material, kindly lent by the Chicago Natural History Museum, and it 

 certainly is no known species of Dicymbe and almost surely is quite unrelated to 

 that genus. 



Macrolobium Schreb. 



Since the publication of my revision of this genus (Mem. N. Y. Bot. Gard. 

 8:257-342. 1953), it has been necessary to publish an urgent nomenclatural note 

 Brittonia 8:113. 1955), and now a number of new species have been recognized 

 in recent collections made on New York Botanical Garden Expeditions in Vene- 

 zuela. The new taxa are arranged in the approximate order they would have oc- 

 cupied in the revision; a revised key will be published to include all subsequent 

 modifications when it appears that the rate at which new taxa are being collected 

 has leveled off. 



Macrolobium anomalum Cowan, sp. nov. 



Arbor (?), ramulis pilosis et pilosulis; stipulae caducae. Petiolus 3-5 mm 

 longus, canaliculars, pilosus et pilosulus. Foliorum laminae oblongae, 6-7- 



