MYRTACEAE 351 
Genera 74, species about 3,000, tropical and subtropical regions of both 
hemispheres, 10 genera and over 120 species in the Philippines. 
1. Fruit a dehiscent capsule; flowers umbellate........................ 1. Eucalyptus 
1. Fruit indehiscent, fleshy. 
2. Leaves glabrous; fruit few-seeded.......................2-..ccccscceeeeeeeeee 2. Eugenia 
2. Leaves pubescent; fruit many-seeded.............0.......2000..220000200-- 3. Psidium 
1. EUCALYPTUS L’Héritier 
Trees with opposite or alternate, coriaceous, horizontal or vertical, 
glabrous leaves, very variable in shape, the nerves slender. Flowers small 
to large, in axillary or lateral, peduncled, solitary umbels. Calyx-tube 
obeonic, campanulate, or oblong, adnate to the ovary, truncate, entire or 
with 4 minute teeth, the orifice closed by a hemispheric, conical, or elongated, 
thin or thick, fleshy or woody operculum, covering the stamens in bud, and 
falling off entire, apparently formed of the concrete petals. Stamens 
numerous. Ovary inferior, summit flat, convex or conical, 3- to 6-celled. 
Fruit composed of the more or less hardened, truncate, calyx-tube enclosing 
the capsule, opening at the apex by as many valves as there are cells. 
Seeds few to many, small. (Greek “well” and “conceal,” in allusion to 
the operculum covering the stamens in bud.) 
Species 150 or more, mostly Australian, a few in Malaya, in the Philip- 
pines 1 indigenous in Mindanao and a few Australian species introduced and 
cultivated. 
*1. E. TERETICORNIS Sm. Blue Gum. 
A tree reaching a height of 15 m or more, the Care grayish, peeling off 
in thin layers. Leaves coriaceous, lanceolate, usually somewhat falcate, 
10 to 25 cm long, pale, the nerves ascending. Peduncles axillary or 
lateral, up to 1.5 cm long, each with 3 to 8 short-peduncled flowers. Flowers 
white, about 1.5 em in diameter when expanded, the calyx-tube obconic, 
about 6 mm in diameter. Operculum about 10 mm long, conic-rostrate. 
Fruit obovoid or subglobose, about 8 mm in diameter, protruded beyond the 
calyx-rim and apiculate. 
Occasionally cultivated, but not spontaneous, fi. Feb—Mar. A native of 
Australia, now cultivated in many other warm countries. 
8. EUGENIA Linnaeus 
Glabrous trees or shrubs with opposite, rarely alternate, usually coria- 
ceous leaves. Inflorescence terminal, axillary, lateral, or sometimes cau- 
line, the flowers solitary, fascicled, or in short racemes, cymes, or panicles. 
Calyx-tube globose, ovoid, funnel-shaped, or sometimes elongated, the 
lobes 4, rarely 5. Petals 4, rarely 5 or none, free or united in a calyptra. 
Stamens very many. Ovary 2-, rarely 3-celled; style filiform; ovules 
many in each cell. Fruit fleshy, rarely dry and fibrous, berry-like or 
drupe-like, few-, often only 1-seeded. (In honor of Prince Eugene of 
Saxony.) 
Species more than 700 in the tropics of both hemispheres, about 100 in 
the Philippines. 
1. Flowers small, the calyx less than 6 mm long; petals cohering and 
Fame AS WHOS As ge ee Ee . 1. BE. jambolana 
1. Flowers large, the calyx 1 em long or more; petals free. 
