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Vermischte neue Diagnosen. 271 
or vacuoles (see fig. 1). — Leaves persistent, trifoliate, lateral leaflets 
small, sessile, usually less than one-third as long as the median, more 
or less blunt a the base or even rounded, Terminal leaflet gradually 
narrowed at the base, Petioles. narrowly winged with a joint at the 
point of attachment of the leaflets. Spines slender, straight, sharp, in 
pairs at the axils or else one of the spines is replaced by a branch. 
Inflorescences axillary, composed of from one to several flowers on 
rather long, slender pedicels. Flowers perfect, 5-merous; calyx 5-lobed, 
petals 5, stamens 10, free. Pistil with a well developed style and a 
thick rounded stigma, Ovary with 8 to 10 cells, each containing nu- 
merous ovules. Fruit, oblong, longitudinally ribbed, with a very thick 
leathery rind, and with cells (filled with gum?) surrounded with watery 
tissue containing large cavities or vacuoles. Seeds numerous in the 
long narrow cells, flattened ovate, hairy. Germination—Cotyledons aerial, 
not increasing in size; first foliage leaves opposite, broadly ovate, ‘sub- 
seriate, sessile, abruptly narrowed at base. — A small tree native to 
the Island of Luzon, Philippine Archipelago. —  Chaetospermum re- 
sembles. Below in having trifoliate leaves, a many-celled ovary, and hairy 
seeds, but differs in many essential characters as noted above. — It 
agrees with Feronia in having aerial cotyledons which do not, however, 
show any increase in size during germination as in this latter genus, 
It agrees with Aeglopsis in having fruits with a leathery rather than a 
woody cortex, altho there are woody elements in the rind of an Aeglopsis 
fruit which seem to be lacking in Chaetospermum. — Chaetospermum differs 
widely from all the other hard-shelled citrous fruits and constitutes a 
striking new genus. It undoubtedly belongs to the hard-shelled group 
of citrous fruits tho it alone does not (so far as known) have woody 
elements in the cortex. — Only one species is known; its synonomy is 
_ as follows. 
1070. Chaetospermum glutinosum (Blanco) Swingle in Journ. Wash. Acad, 
Sci., III (1913), p. 102. — Limonia glutinosa Blanco, 1837, Fl. Filip. Ed. I, p 358. 
— Feronia ternata Blanco, 1845, Fl. Filip. Ed. II, p. 252. — Aegle decandra 
Naves, 1878 (2), in Blanco, Fl. Filip. Ed. III, pl.124. — Aegle glutinosa (Blanco), 
Merrill, 1904, in Philipp. Gov. Lab. Bur. Bull, no. 6, p. 12. — Limonia 
Engleriana Perkins, 1905, Frag. Fl. Philipp. Fasc. III, p. 163. — Belou 
glutinosa (Blanco) Skeels, 1909, Bull. 162 Bur. Pl. Ind. Dept. Agr., p. 26. 
— Illustrations: Neaves 1878 (?) in Blanco, M, Flora de Filipinas 
Ed. 3, vol. 2, pl. 124 (Lvs. fis. and fts). — Vidal y Soler, S., 1883, 
Sinopsis de familias y generos de plantas leñosas de Filipinas, pl. 25, 
fig. J, 1—5 (Fls. fts. and seed). — Swingle, Walter T., 1912, Le genre 
Balsamocitrus, etc., |. c., pl. 5 (Young plant). — The tabog is a small 
tree native to the central part of Luzon, Philippine Islands. This 
species has been reported from the provinces of Tárlac, Pampanga (the 
type locality is Monte’ Ardyat in this province) Bataan, Manila, and 
Mórong. I have seen specimens from all of these provinces except 
