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TABLE OF CONTENTS
1. A New Guatemalan Spigelia. By Dorothy N. Gibson 1
2. Three New Nicaraguan Epidendrums. By Alfonso H. Heller 7
3. Syagrus oleracea ( Mart. ) Becc. and Closely Related Taxa. By
S. F. Classman jo
4. Tropical American Plants, X. By Louis O. Williams 35
5. Two New Guatemalan Tournefortias. By Dorothy N. Gibson 65
6. A New Member of Morganella. By Patricio Ponce de Leon 69
7. A New Odontoglossum from Nicaragua. By Alfonso H. Heller 73
8. Studies in the Palm Genus Syagrus Mart. II. By S. F. Classman 77
9. Revision of the Genus Vascellum ( Lycoperdaceae ) . By Patricio
Ponce de Leon J09
10. A Conspectus of the Palm Genus Butia Becc. By S. F. Classman 127
11. Studies in American Plants, II. By Dorothy N. Gibson 173
12. Tropical American Plants, XI. By Louis O. Williams .179
13. The Juglandaceae of Guatemala. By Louis O. Williams and Antonio
Molina R 207
14. An Overlooked Genus of the Scrophulariaceae. By Louis O. Williams 211
15. A Synopsis of the Palm Genus Syagrus Mart. By S. F. Classman 215
16. A New Hybrid in the Palm Genus Syagrus Mart. By S. F. Classman . . 241
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A NEW GUATEMALAN SPIGELIA
DOROTHY N. GIBSON
THREE NEW NICARAGUAN EPIDENDRUMS
ALFONSO H. HELLER
SYAGRUS OLERACEA (MART.) BECC.
AND CLOSELY RELATED TAXA
S. F. GLASSMAN
TROPICAL AMERICAN PLANTS, X
LOUIS 0. WILLIAMS
FIELDIANA: BOTANY
VOLUME 32, NUMBERS 1, 2, 3, 4
Published by
FIELD MUSEUM OF NATURAL HISTORY
AUGUST 19, 1968
Ttie Ubrtry of the
MAY \ 5 1972
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A NEW GUATEMALAN SPIGELIA
DOROTHY N. GIBSON
Custodian of the Herbarium
Field Museum of Natural History
THREE NEW NICARAGUAN EPIDENDRUMS
ALFONSO H. HELLER
Associate, Field Museum of Natural History
SYAGRUS OLERACEA (MART.) BECC.
AND CLOSELY RELATED TAXA
S. F. CLASSMAN
Research Associate, Palms
Field Museum of Natural History
and
University of Illinois, Chicago Circle
TROPICAL AMERICAN PLANTS, X
LOUIS 0. WILLIAMS
Chief Curator, Botany
Field Museum of Natural History
FIELDIANA: BOTANY
VOLUME 32, NUMBERS 1, 2, 3, 4
Published by
FIELD MUSEUM OF NATURAL HISTORY
AUGUST 19, 1968
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CONTENTS
A New Guatemalan Spigelia by Dorothy N. Gibson 5
Three New Nicaraguan Epidendrums by Alfonso H. Heller 7
Syagrus oleracea (Mart.) Becc. and Closely Related Taxa by S. F. Glassman . 13
Tropical American Plants, X by Louis O. Williams 35
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FIELDIANA . BOTANY
Volume 32, No. 1 August 19, 1968 Publication 1052
A New Guatemalan Spigelia
DOROTHY N. GIBSON
CUSTODIAN OF THE HERBARIUM
FIELD MUSEUM OF NATURAL HISTORY
During a recent study of the family Loganiaceae for the "Flora
of Guatemala," a new species of Spigelia was found, which is described
below:
Spigelia pygmaea D. Gibson, sp. nov.
Herbae annuae vel perennes usque ad 14 cm. altae (plerumque 8 cm.); foliae
diversae ovato-rhombicae et oblongo-ellipticae, obtusae vel acutae; inflorescentia
multispicata, spica erecta simplex vel ramosa, multiflora; sepala lanceolata, cilio-
lata, minute granulosa; corolla subcampanulata, lobi late lanceolati, acuti; capsula
bilobata, muriculata.
Plants annual or possibly perennial, the lower portion sometimes creeping and
rooting, small, erect, 6-14 cm. tall (average height ca. 8 cm.), the stems short,
1-3 cm. long, tetragonous, the stipules broadly triangular; leaves decussate, entire,
tapering to the short, narrowly winged petioles, the blades thin, obtuse, those of
one pair ovate-rhombate, the second and larger pair oblong-ovate or oblong-
elliptic, obtuse to acute, the smaller pair 1-2 cm. long, 0.8-1.5 cm. broad, the larger
pair 2-5 cm. long, 1.5-2.5 cm. broad, deep green above, paler beneath, the nerves
prominent, few; inflorescence multispicate, the flowering spikes erect, some arising
from near the base, others, especially on older plants, from leaf axils, sometimes
branching, 1.5-9 cm. tall (averaging 4-6 cm.), minutely granular-verrucose, many-
flowered, the flowers sessile or subsessile, bracteolate; sepals lanceolate, ciliolate,
minutely granular especially along the midnerve, ca. 1 mm. long; corolla white,
ca. 1.5 mm. long, subcampanulate, smooth within, the lobes broadly lanceolate,
acute; stamens included, the very short filaments inserted just below the middle
of the tube; ovary subglobose, the style minute, the stigma articulating directly
above the apex of the capsule; mature capsule bilobate, muriculate, 1-1.5 mm.
long, ca. 2 mm. broad; seeds ridged.
GUATEMALA: In savanna about 7 km. west of village in zapotal,
on La Gloria Road, Dos Lagunas, Dept. Pet^n, Oct. 19, 1960, Con-
treras 1537 (type LL; frag. F). Two specimens which may be seed-
lings of the same species, with smaller leaves and only 1-3 spikes in
the inflorescence are: savanna, Dolores, Dept. Pete"n, Oct. 18, 1961,
Contreras 3071 ; pine forest, Sierra de los Cuchumatanes, alt. 1000-
1200 m., Sept. 2, 1942, Steyermark 51798.
Library of Congress Catalog Card Number: 68-31880
5
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FIELDIANA: BOTANY, VOLUME 32
FIG. 1. Spigelia pygmaea. A, habit, X 1; B, flower, X 15; C, corolla dissec-
ted to show stamens, X 15; D, pistil, X 15; E, capsule showing muriculate apex,
X 10. Drawing by Davida Simon.
Although about the same height as S. polystachya Klotzsch ex
Prog., and with the same minute style segment, S. pygmaea may be
readily separated by its broad leaves, multispicate inflorescences,
and muriculate capsules.
