Marcgravia zonopunctata is described as a species new to science and illustrated. The species is remarkable for its hypophyllous glands arranged in bands on the lower leaf surface (not known before from Marcgravia), for its peculiar shape of the nectary bracts and for its inflorescences appearing on short-shoots (as far known). This is the first species of an unranked, obviously natural group within Marcgravia (Galeatae group) known to range in Amazonia and at low altitudes. Some features of this Galeatae group are discussed here (e.g. pollination, distribution, leaf anatomy) and a key to its species is given.
References
I. W. Bailey
1922: The pollination of Marcgravia: A classical case of ornithophily? — Amer. J. Bot. 9: 370–384. Google Scholar
S. Dressler
2000:
Marcgraviaceae — ein Porträt der neotropischen Familie. — Pp. 413–424 in:
S.-W. Breckle
,
B. Schweizer
&
U. Arndt
(ed.),
Ergebnisse weltweiter ökologischer Forschung / Results of worldwide ecological studies. — Stuttgart. Google Scholar
S. Dressler
(accepted): Marcgraviaceae.
— In:
K. Kubitzki
(ed.):
The families and genera of vascular plants. vol. — Berlin. Google Scholar
W. Greuter
,
J. McNeill
,
F. R. Barrie
,
H. M. Burdet
,
V. Demoulin
,
T. S. Filgueiras
,
D. H. Nicolson
,
P. C. Silva
,
J. E. Skog
,
P. Trehane
,
N. J. Turland
&
D. L. Hawksworth
(ed. & compilers)
2000: International Code of Botanical Nomenclature (Saint Louis Code) adopted by the Sixteenth International Botanical Congress St Louis, Missouri, July-August 1999. — Regnum Veg. 138. Google Scholar
R. A. Howard
1970: The ecology of an elfin forest in Puerto Rico. 10. Notes on two species of Marcgravia.
— J. Arnold Arbor. 51: 41–55. Google Scholar
F. Miranda
1944: Los secretos de las flores. — Folletos Divulg. Ci. Inst. Biol. 41: 52–55. Google Scholar
A. F. W. Schimper
1898: Pflanzen-Geographie auf physiologischer Grundlage. — Jena. Google Scholar
M. Tschapka
&
O. von Heiversen
1999: Pollinators of syntopic Marcgravia species in Costa Rican lowland rain forest: Bats and opossums. — Pl. Biol. 1: 382–388. Google Scholar
H. N. Wagner
1946: Food and feeding-habits of Mexican hummingbirds. — Wilson Bull. 58: 69–93. Google Scholar
R. Wettstein
1935: Handbuch der systematischen Botanik, ed. 4, 2. — Leipzig & Wien. Google Scholar
L. Wittmack
1878:
Marcgraviaceae.
— Pp. 213–258 in:
C. F. P. Martius
(ed.),
Flora brasiliensis 12(1). — München, etc. Google Scholar