PHILIPPINE URTICACEAE. 21 
21. LEUCOSYKE Zoll. & Mor. 
F 
KEY TO THE PHILIPPINE SPECIES OF LEUCOSYKE. 
Stipules large, membranaceouSj 7.5 to 10 cm long 1. L. nivea 
Stipules fairly large, 3 to 4 cm long, never softly tomentose on the outer surface. 
Stipules lanceolate or elliptic-lanceolate; veins connecting midveiu with 
nerves sharply bent 2. L. mindorensis 
Stipules elliptic; veins connecting niidvein with nerves merely arched or 
nearly straight „ 3. L. aspera 
Stipules subchartaceous, 14 to 32 mm long, densely soft-pubescent, the nerves 
very conspicuous 4. Z/. hispidissima 
Stipules not more than 2.5 cm long, externally strigose or appressed-strigose. 
Stipules membranaceous, oblong-lanceolate. 
Stipules united for at least two-thirds their length. 
Leaves up to 12 cm long, veins between midvein and ner\'es more 
crowded, usually 2 to 3 mm apart, rarely forked. 
Leaves widest at or above middle 5. L. magallanensis 
Leaves widest below middle 6. L. hrunnescens 
Leaves 17 to 22 cm long, the veins loss crowded, except near the 
base usually at least 5 mm apart, often forked. 
8. L. negrosensis 
Stipules free for at least three-fourths of their length 7. L. ovalifoUa 
Stipules chartaceous, lanceolate. 
Leaves trinerved ~ 9. L. capitellata 
Leaves falsely 4-nerved 10. L. quadrinervia 
The genus LeucosyJce was published in 1845 or 1846. Synonymous 
with it is Missiessya, a name attached to plate 93 of the Bot. Voy. Bonite, 
without description. The latter was taken up by Weddell^ in 1854^ at 
which time he included Dehregeasia in his conception of the genus; in ^ 
i 
1869^ he accepted Leucosyhe. Leucocnide Miq.^ 1851, is also partly 
Leucosyhe and partly Dehregeasia, but the more typical species belong 
to the former. 
» 
1, Leucosyke nivea sp. nov. 
L. candidissima Merr. in Philip. Journ. Sci. 3 (1908) Bot. 130, non Wedd. in 
DC. Prodr. 16^ (1869) 235.=« " 
L. candidissimae affinis, sed differt stipulis multo longioribus et minus 
pubescentibus, capitulis majoribuSj et foliorum basi acutorum venatione. 
Peduncles mostly paired, 10 to 17 mm long, the fruiting heads 12 to 
15 mm in diameter : flowei's as in L. candidissima. 
■ 
Trees 4.5 to 7.5 m high, the branchlets terete, longitudinally striate, 
annulate and conspicuously marked by the scars of fallen leaves, more 
or less appressed-pubescent or glabrescent, internodes about 1 cm long: 
petioles 3 to 5 cm long, appressed-pubescent; lamina broadly elliptic or 
oblong-elliptic, 21 to 27 cm long, 10 to 13 cm wide, the base acute or 
subacute, the margins shallowly dentate except in the basal third, the 
