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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.