Contents

TABLE OF CONTENTS

A REVISION OF PHILODENDRON SUBGENUS PHILODENDRON (ARACEAE) OF CENTRAL AMERICA
BY DR. THOMAS B. CROAT

MATERIALS AND METHODS

ACKNOWLEDGMENTS

HISTORY OF THE GENUS PHILODENDRON

HEINRICH WILHELM SCHOTT
ADOLF ENGLER
KURT KRAUSE
MODERN WORK
COLLECTING HISTORY
FOSSIL HISTORY

INTRAGENERIC RELATIONSHIP

INFRAGENERIC RELATIONSHIP

KEY TO SUBGENERA OF PHILODENDRON
RELATIONSHIP WITHIN P. SUBGENERA PHILODENDRON
DISCUSSION OF SUBGENERIC CLASSIFICATION
1. P. Sect. Baursia
2. P. Sect. Philopsammos
3. P. Sect. Philodendron
1. P. Subsect. Macrolonchium
2. P. Subsect. Canniphyllium
3. P. Subsect. Platypodium
4. P. Subsect. Psoropodium
5. P. Subsect. Solenosterigma
6. P. Subsect. Philodendron
7. P. Subsect.Achyropodium
4. P. Sect. Calostigma
1. P. Subsect. Macrobelium
2. P. Subsect. Glossophyllum
3. P. Subsect. Oligocarpidium
4. P. Subsect. Bulaoana
5. P. Subsect. Eucardium
5. P. Sect. Tritomophyllum
6. P. Sect. Schizophyllum
7. P. Sect. Polytomium
8. P. Sect. Macrogynium
9. P. Sect. Camptogynium

KEY TO SECTIONS AND SUBSECTIONS OF P. SUBG: PHILODENDRON

KEY TO PHILODENDRON SUBGENUS PHILODENDRON OF CENTRAL AMERICA
KEY 1
KEY 2
KEY 3
KEY 4

MORPHOLOGY OF VEGETATIVE STRUCTURES

ANATOMY

VEGETATIVE ANATOMY

VASCULAR ANATOMY

HABIT AND GROWTH PATTERNS

POSTERIOR LOBES

VENATION MIDRIBS

PRIMARY LATERAL VEINS

LESSER ORDER VEINS

MORPHOLOGY OF REPRODUCTIVE STRUCTURES

SPATHE COLOR SPADIX ANDROECIUM POLLEN

OVARY LOCULE NUMBER

OVULES PER LOCULE

OVULE AND FUNICLE MORPHOLOGY

STYLE AND STIGMA MORPHOLOGY

POLLINATION BIOLOGY

BREEDING BEHAVIOR MORPHOLOGY OF FRUITING STRUCTURES INFRUCTESCENCES AND FRUITING BEHAVIOR
BERRIES BERRY COLOR SEEDS PHENOLOGY A. Flowering in dry-season and wet season

B. Flowering only in wet season

C. Flowering only in dry season

D. Flowering all year

E. Flowering bimodally

CYTOLOGY GEOGRAPHICAL DISTRIBUTION AND ENDEMISM

TAXONOMIC TREATMENT