www.mobot.org Research Home | Search | Contact | Site Map  
 
Research
W³TROPICOS
QUICK SEARCH

MO PROJECTS:
Africa
Asia/Pacific
Mesoamerica
North America
South America
Floras
General Taxonomy
Photo Essays
Training in Latin
  America

MO RESEARCH:
Wm. L. Brown Center
Bryology
GIS
Graduate Studies
Research Experiences
  for Undergraduates

Imaging Lab
Library
MBG Press
Publications
Climate Change
Catalog Fossil Plants
MO DATABASES:
W³MOST
Image Index
Rare Books
Angiosperm
  Phylogeny

Res Botanica
All Databases
INFORMATION:
What's New?
People at MO
Visitor's Guide
Herbarium
Jobs & Fellowships
Symposium
Research Links
Site Map
Search

Projects

Flora of the Venezuelan Guayana

<< Back

BIGNONIACEAE

33. SPARATTOSPERMA Mart. ex Meisn., Pl. Vasc. Gen. 2: 208. 1840.

Medium-sized to large trees, the branchlets terete to subtetragonal, lacking interpetiolar glandular fields or pseudostipules, usually sticky-vernicose as are the leaves and inflorescence. Leaves palmately 3-5-foliolate. Inflorescence a terminal panicle with a rather well-developed central rachis. Calyx apiculate in bud, irregularly splitting, usually 2- or 3-labiate or subspathaceous at anthesis, glabrous or slightly puberulous near base; corolla white or pale pink, very broadly tubular-campanulate above a narrow basal tube, the tube glabrous outside, the lobes puberulous. Stamens glabrous, the thecae straight, divaricate. Ovary narrowly oblong; ovules multiseriate; disk cylindrical. Fruit a linear-cylindric, ± terete capsule, longitudinally costate, glandular-lepidote or apparently glabrous. Seeds long and narrow, the hyaline-membranous wings fragmented into hair-like capillary segments.

Tropical South America; 2 species, 1 in Venezuela.

Sparattosperma leucanthum (Vell.) K. Schum. in Engl. & Prantl, Pflanzenfam. 4(3b): 235. 1894. -Bignonia leucantha Vell., Fl. Flumin. 251. 1825 [1829].

Tree to 25 m. Granitic outcrops, semideciduous to evergreen lowland forests, 50-200 m; Bolívar (35 km from Caicara on road to Puerto Ayacucho, Río Parguaza basin). Amazonian Peru, Brazil, Bolivia, Paraguay. Fig. 413.

Sparattosperma leucanthum resembles Tabebuia but differs in the seed wings split into capillary trichomes, and no Venezuelan Tabebuia has the varnish-like secretion that usually covers young growth and leaves of Sparattosperma.

Scientific Comments:
Paul Berry (peberry@facstaff.wisc.edu) or Kay Yatskievych (kay.yatskievych@mobot.org).

 
 
© 1995-2014 Missouri Botanical Garden, All Rights Reserved
P.O. Box 299, St. Louis, MO 63166-0299
(314) 577-5100

E-mail
Technical Support