Flora of Romonum Island — Stone 
103 
63. Sap milky; leaves not as above 
64. Old leaves turning red just before falling; fruit a small 3-celled capsule; latex poison- 
ous Excoecaria agallocha 
64. Old leaves usually turning yellow; fruit a small "fig”; not poisonous 
65. Small, somewhat shrubby tree; leaves usually asymmetric at base; dioecious; figs 
orange Ficus tinctoria 
65. Large trees with aerial roots; leaves symmetric; figs pink Ficus virens 
62. Sap clear, watery 
66. Mangrove trees with prominent aerial proproots or ascending breather-roots 
67. Leaves spirally arranged, longer than broad; stipules present 
68. Flowers with scarlet corolla, tubular; leaves narrowly obovate, often notched at tip; seed 
germinating after falling Lumnitzera lift or ea 
68. Flowers with inconspicuous white or orange petals (but calyx may be deep red); seed 
germinating on tree, radicle growing to a length of a foot or more before falling 
69. Calyx of 7-14 narrow lobes, usually red (rarely white) ; flowers shortly stalked, 
pendent Bruguiera gymnorrhiza 
69. Calyx of 4 short deltoid lobes, usually green 
70. Inflorescence branched, of several flowers Rhizophora mucronata 
70. Inflorescence short, of few flowers Rhizophora apiculata 
61. Leaves opposite, nearly as broad as long or broader; stipules absent Sonneratia 
66. Not mangrove trees as above 
71. Stamens fused into a tube surrounding the style; corolla tubular, yellow, of 5 petals; hibiscus- 
like flowers 
72. Leaves broadly cordate, grayish beneath, tip not much drawn out Hibiscus tiliaceus 
72. Leaves narrowly cordate, green, tip long drawn out Thespesia populnea 
71. Stamens not fused as above 
73. Leaves pale beneath, covered closely by minute peltate scales; fruit a keeled, woody, boat- 
like structure Heritiera litoralis 
73. Leaves not as above 
74. Twigs thorny; foliage with odor of lime Citrus 
14. Not thorny; not with lime odor 
75. Leaves alternate or spiralled 
76. Leaves distichous (alternating in 1 plane) 
77. Flowers bisexual 
78. Leaves coarsely toothed; flowers yellow; a scrambling shrub 
Colubrina asiatica 
78. Leaves entire; trees 
79. Fruit muricate (with soft blunt thorns), edible ... Annona muricata 
79. Fruit not muricate Cananga odorata 
77. Flowers unisexual Glochidion 
76. Leaves not distichously arranged 
80. Leaves peltate or nearly so 
81. Flowers bisexual; leaf entire with red spot at junction of petiole; fruit a 
black berry set inside a lantern-like calyx Hernandia 
81. Flowers unisexual; leaf with 3 large teeth and many small ones; without 
red spot; fruit a small capsule Macaranga carolinensis 
80. Leaves not at all peltate 
82. Leaves concave, saucerlike Polyscias Scutellaria 
82. Leaves flat 
83. Flowers unisexual; leaves coarsely toothed Acalypha 
83. Flowers bisexual; leaves entire 
84. Corolla orange Cordia 
84. Corolla white, greenish, pink, or cream 
85. Leaves mostly 1-2 inches long, crowded on stems, fleshy; flow- 
ers white with separate petals Pemphis 
85. Leaves larger, mostly 4-16 inches long 
86. Leaves elliptic, glabrous; fruit a mango . . Mangifera indica 
86. Leaves obovate 
87. Leaves pale, often softly hairy with indistinct veins; flow- 
ers in short cymes; berry white Scaevola 
87. Leaves darker, with distinct veins; fruit not white 
88. Flowers in narrow spikes, less than % inch wide; 
fruit a red drupe Terminalia 
88. Flowers in long racemes or clusters; fruit a green or 
brownish, angular, boxlike structure 
89. Flowers pink, in long pendent racemes; fruit about 
3 inches long, with rounded angles; tree of fresh- 
water swamps Barringtonia racemosa 
