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218 FIELDIANA: BOTANY, VOLUME 28 of the rachis of the petiole, peduncles, and branchlets, and the entire margins of the leaflets. Panopsis pUriana Steyermark, sp. nov. Frutex 1.1-1.8 m. alms; ramulis junioribus cum petiolis parce FIGURE 42 A, Euplassa venezuelana. Pistil (X 5)", B, Euplassa venezuelana. Perianth segment, ventral view, showing anther (X 5); C, Euplassa venezuelana. Single flower, unopened (X 5); D, Phthirusa ptariana. Petal with attached stamen, lateral view (X 3); E, Phthirusa ptariana. Petal with attached stamen, ventral view (X 3); F, Phthirusa ptariana. Petal with attached stamen, ventral view, filament more elongate (X 3>, G, Ranunculus limoselloides. Petal (X 4); H, Ranunculus limoselloides. Sepal (X 4); I, Ranunculus limoselloides. Achene (X 3 ).
BOTANICAL EXPLORATION IN VENEZUELA - I 219 addresso-pilosulis; foliis oppositis subcoriaceis subtus pallidoviridibus in sicco flavido-vel olivaceo-viridibus utrinque prominente pulchre areolatp-reticulatis obovato-oblongis basi obtusis apice rotundatis, laminis 4-6 cm. long is, 1.7-3 cm. latis, specie glabris sed cum microscope pilis pallidis adpressis obtectis, petiolis 2-3 mm. longis parce adpresso-pilosulis; racemis terminalibus 3-fasciculatis simplicibus 4-6 cm. longis, 12-15 mm. latis; rhachi 4-6 cm. longo, ferrugineo-tomentoso; pedicellis divaricate patentibus 4-5 mm. longis, ferrugineo-pubescentibus; sepalis 4.5-5 mm. longis planis revolutis intus glabris extus pilosulis ferrugineis; filamentis 3.5-4 mm. longis glabris sepalis brevioribus; squamulis hypogynis 0.6-0.7 mm. longis in urceolum quadridentatum connatis, dentibus 0.2 mm. longis; ovario ovato superne angustato ferrugineo-hksutulo; stylo et stigmate flavido. Type in herb. Chi. Nat. Hist. Mus., collected on dry sandy and rocky sandstone exposures on level ground adjacent to swamp on plateau-portion of southeast-facing slopes, Ptari-tepuf, state of Bolivar, alt. 1600 m., November 1, 1944, Julian A. Steyermark 59677, "shrub 4-6 feet tall; leaves subcoriaceous, deep green above, pale green below, areolate-reticulate-veined; pedicels and calyx and ovary ferruginous; style and stigma yellow". This species is closely related to P. multiflora (Schott) Taub. (Andripetalum multiflorum Schott and Andripetalum reticulatum Pohl), but differs from that in having more slender, unbranched racemes with simple or temate peduncles, shorter, more rigidly divaricate-spreading pedicels, more finely areolate-reticulate and paler green leaves, hairs on the ovary longer, hairs on the leaf surface longer and of a paler buff color instead of white, and in the hypogynous squaraellae, which in P. multiflora have longer teeth 0.5 mm. long and longer glands 0.9-1 mm. long. Panopsis tepuiana Steyermark, sp. nov. Arbor 19-22 m. aha; ramulis novellis ferrugineo-tomentellis; foliis alternatis vel oppositis coriaceis, supra nitidis viridibus, adultis subtus pallidioribus, junioribus subtus pallido-ferrugineis, oblanceolatis vel elliptico-oblanceolatis, basi angustatis, apice subobtusis apiculatis, supra minute reticulatis, subtus tenuiter reticulatis et dense minute rubentibus vel ferrugineo-pilosulis ad nervum medium praecipue, laminis 8.5-15 cm. longis, 2-5 cm. latis; petiolis 8-15 mm. longis, rubentibus vel ferrugineo-tomentellis; racemis terminalibus simplicibus vel ramosis, 6.5-8 cm. longis, dense ferrugineo-tomentosis; pedicellis 1.5-3 mm. longis dense rubentibus vel ferrugineotomentosis; sepalis rubentibus linear i-spatulatis obtusis recurvatis intus glabris extus ferrugineo-tomentosis, 3.5-5 mm. longis, 0.5 mm. latis; antheris oblongis abrupte appendiculatis; filamentis plerumque liberis, parte liberi 1.5-2 mm. longo, glabris; squamellis hypogynis 0.5 mm. altis, tenuiter lobatis rotato-connatis; ovario dense ferrugineo-hirsutulo; stylo glabro erecto, 2-2.2 mm. longo; stigmate clavato.
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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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