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212 FIELDIANA: BOTANY, VOLUME 28 laevi, ligno pallldo. Ramuli terminal! subteretes internodiis brevibus dense hispidis pilis longis rigidis patentibus siccitate flavis copiose obtectis. Folia simplicia alterna coriacea petiolata. Petiolus longus mediocriter robustus patulis leviter striatus copiosis pilis longis flavis patulis munitis, basi subite incrassatus, 4.5-8 cm. longus. Lamina ovata basi rotundata vel subtruncata vel obtusissime cuneata, apice late obtusa, margine leviter repando-crenata, 10-15 cm. longa, 6.5-11.5 cm. lata, supra pallide viridis sublaevis longis pilis tenuis rectis basi minute callosulis sparsis munita, costa magis villosa et nervis secundariis conspicuis tertiariis obsoletis; subtus cinerea costa crasse elevata hirsute, nervis secundariis prominentibus 7-9 utroque latere ascendentibus angulo acuto flavo-hirsutis prope marginem tenuioribus arcuatis anastomosatis, venulis transversis copiosis prominulis cum alteris tenuioribus in reticulo anastomosatis, pilos longos rigidos sparsos ferentibus et dense tomento lanato-araneoso reliquam laminam obtecto velatis. Stipulae subcoriaceae 3.5 cm. longa obtusiusculae densissime hirsuta. Inflorescentiae femineae paniculatae pluriforae axillares ad terminationes ramorum quam folia valde breviores. Pedunculus 4.5 cm. longus rigidus rectis patentibus dense longis sime hispid us. Ramuli 1.5-5 mm. longi crassiusculi plus minusve flexuosi hirtuli. Pedicelli breviter hirsutuli crassiusculi recti vel arcuati, 2-4 mm. longi. Perianth ium femineum ovatum utriculosum breviter hirsutulum. Stigma capitatum tomentulosum subsessile. Capsula ovato-elliptica apice obtusa circa 9-10 mm. longa, 5-6 mm. lata, pericarpio coriaceolignoso, perianthio carnoso nigrescenti sapido inclusa. Type in herb. Chi. Nat. Hist. Mus., collected at Capihuara Casiquiare, Territorio Federal Amazonas, alt. 118 m., May 6, 1942, Llewelyn Williams 15812, "nom. vulg. Cucura. Arbol de tamano mediano o moderadamento alto con corona abierta; el tronco con varias raices superficiales o adventicias y el tronco cilindrico, erecto, 30 cm. diam., sin ramas por la mitad de la altura; la corteza de color castanb claro o grisaceo, algo lisa y el liber Colorado a obscuro; la madera tambie'n de color claro, moderadamente blanda y facil de cortar, el fruto ovoideo, de color oscuro, casi negro, contiene una pulpa comible y de sabor dulce; el liber exsuda resina de color oscuro o negruzco; hojas de color verde pa lido tirando a gris por debajo; en la selva de tierra firme en los chiquichiquiales". Pourouma Cucura is a well marked species distinguished chiefly by its long shaggy branchlets, petioles, and inflorescences. Coussapoa Steyermarkii Cuatr., sp. nov. Arbor epiphytica trunco circa 30 cm. diam. Ramuli brunnei-grisei juveniles dense tomentoso ferrugineo-hirsuti. Folia simplicia Integra alterna petiolata crasse coriacea. Petiolus robustus 10-15 mm. longus dense hirsutus, supra planiusculus subtus striatus apice subarticulatus. Lamina obovata basi obtuse cuneata
BOTANICAL EXPLORATION IN VENEZUELA - I 213 apice obtusa vel rotundata margine laevis leviter revoluta, 4.5-9 cm. longa, 2.8-6.5 cm. lata; supra atro-viridis nitida, siccitate ochraceoviridula opaca, nervis raedio secundariisque argute impressis reliquis obsoletis; subtus luteolo-viridis nervis ferrugineis, in sicco ochraceo-ferruginea, nervo medio secundariisque 3-4 utroque latere, acute ascendentibus prope marginem arcuato anastomosatis valde crasse prominentibus, subsericeo-hirsutis ferrugineis, nervulis trans vers is satis crebris horizontalibus valde elevatis cum venulis minus prominulis reticulato-anastomosatis, copies is pilis longis simplicibus vel furcatis plus minusve patentibus et intricatis tecta. Stipula crassiuscula, acutiuscula 10 mm. longe densissime subsericeo-hirsuta. Inflorescentiae femineae 1-2-cephalae axillares, pedunculo 10-12 mm. longo. Capitulis ad 4 mm. diametro globosis. Perianthium obovoideo-angulatum glabrum. Semina nitida. Type in herb. Chi. Nat. Hist. Mus., collected on the southeastfacing slopes of Mount Ptari-tepui, state of Bolivar, ak. 1585-1600 m., November 10-11, 1944, Julian A. Steyermark 60002a, "warembayek. Epiphytic tree with trunk 1 foot in diameter growing attached to trunk of 59999; leaves coriaceous, dark green and shining above with sulcate nerves, yellow green below with ferruginous nerves prominent below; stems, buds, petioles, and rachis ferruginous; flowers greenish." Number 60679 collected at Rio Karuai, 1220 m., alt., is sterile and probably represents the same species in spite of its leaves rotundate at the base. Number 60364 of Santa Teresita de Kavanayen is another form with larger and acute leaves, but also sterile. This species is typified by the hirsute-ferruginous branchlets and petioles and by its thick, coriaceous leaves which are hirsuteferruginous below. Coussapoa viridifolia Cuatr., sp. nov. Kami cortice griseo rugoso, valde juve- Arbor parva, 8 met. alta. niles ferrugineo-hirsuti. Folia simplicia Integra alterna petiolata coriacea. Petiolus 10-22 mm. longus, rigidus pubescens subtus leviter striatus supra sulcatus. Lamina obovato-oblonga basi paulo angustata obtusissima, apice obtusa vel rotundata, margine laevis plana vel, in sicco, leviter revoluta, 6-9 cm. longa, 3-5 cm. lata; supra viridis glabra, siccitate tabacinea, nervis medio secundariisque leviter impressis reliquis nervulis minutum reticulum prominulum formantibus; subtus costa crasse elevata, nervis secundariis prominentibus 5 utroque latere, angulo acuto ascendentibus prope marginem tenuioribus arcuatoanastomosatis, nervulis transversis prominulis, venulis minus elevatis reticulum minutum gracilem formantibus, nervs parce pubescentibus reliqua glabra. Stipulae breves villoso-hirsutae 4-7 mm. longae.
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o 2 CM XI E> RAR.Y OF THL UNIVERSIT
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FIELDIANA: BOTANY A Continuation of
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NUMBER 1 LIST OF ILLUSTRATIONS TEXT
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PAGE 67. Emmotum ptarianum 342 68.
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CONTRIBUTIONS TO THE FLORA OF VENEZ
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BOTANICAL EXPLORATION IN VENEZUELA
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I BOTANICAL EXPLORATION IN VENEZUEL
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