Phacellaria] XCVII. SANTALACEiE 555 



elongate-ovoid J-J in. long. 4. P. Wattii, Hook. f. Manipur 7,500 ft. Hoary, A. in. 

 compact clusters. 



Champereia GrMthiana, Planclion. Tenasserim. Andamans. Malay Penins. and 

 Archip. Formosa. Philippines. A small glabrous tree, branchlets pale, flexuose. 

 L. alternate, elliptic or elliptic-lanceolate, blade 3-8, pet. -J-J in. long. PI. minute,, 

 bisexual, in axillary panicles 2-4 in. long, peduncles and pedicels slender. Periantli 

 inferior, segments 5, valvate. Stamens 5, filaments longer tban perianth. Drupe 

 bright red, ellipsoid, obtuse, seed 1. 



Oedee XOVIII. EUPHORBIACEiE. Gen. PL iii. 239. 



Herbs, shrubs or trees, milky sap in some genera. L. alternate (exceptions : 

 Buxits, Ilischodorij Trewia, Ccelodisctos, species of Mallotus and Excmcaria)^ 

 undivided (exceptions: Bischofia, Dalechampia)^ usually stipulate. El. 

 mostly small, nearly always unisexual. Perianth usually simple and calycine, 

 petals present in several genera, connective often thick and large. Ovary 

 superior, as a rule of 3 carpels, more or less united, styles as many as cells or 

 carpels, free or united, ovules 1-2 in each cell, pendulous from the inner angle. 

 In many genera the micropyle is covered by an excrescence of the placenta 

 (caruncle) . Pruit either a capsule of 2-valved l~2-seeded cocci, usually 

 separating from a persistent axis, or a drupe. Embryo straight, radicle 

 generally superior, cotyledons in most cases broad, flat in a fleshy oily albu- 

 men, in a few genera cotyledons fleshy without or with scanty albumen. 



Baillon and others separate Buxus and Sarcococca (raphe dorsal, micropyle towards 

 the axis) from Euphorhiacem. In Engler u.. Prantl iii. 5. 130, they and a few other 

 genera form a separate order: Buxacem. All genera here described belong to the 

 Division of PlafylohecB, the genera with narrow cotyledons {Stenolohece) are limited to 

 Australia and South America. 



In species of Croton, Hymenocardia^ Macaranga^ Mallotus^ Coccoceras^ and Homonoia 

 the underside of 1. is densely clothed with minute orbicular often shining scales, 

 consisting of radially arranged cells or rows of cells. In these cases as well as in 

 Elceagnus^ Heritiera and other trees, the close covering of these minute scales doubtless 

 affects the transpiration of the leaves as well as the interchange of air. Their action 

 probably is analogous to that of a dense felt of stellate or other hairs. No sharp limit 

 exists between these scales and the flat stellate hairs which clothe the underside of 1. in 

 some of the genera mentioned and in other genera of this Order. 



I. Plower-heads resembling single fl., consisting of a calyx-like involucre, enclos- 

 ing several fl. withoixt perianth, viz., one central ? £.. (a pedicellate pistil) and 

 several $ fl., each a single pedicellate stamen. 



One ovule in each cell 1. Euphokbia. 



II. Plowers not united in heads, each fl. with a perianth, 2 ovules in each cell, as 

 a rule collateral, in a few cases superposed, one pendulous from the apex the other from 

 half-way up the axis. Inflorescence mostly axillary or lateral, petals none or minute. 



(1) L. trifoliolate, fl. panicled . . . .2. Bischofia. 



(2) I/, undivided, opposite 3. Buxtjs. 



(3) L. undivided, whorled Mischodon (p. 559). 



(4) li. undivided, alternate. 



A. $ calyx4obes valvate, petals scale-like. 

 Ovary S-celled, f r. a drupe, fl. in axillary 



clusters 4. Bridelia. 



Ovary 2-celled, capsule flat obcordate, 



<? fl. in catkins Hymenocardia (p. 561). 



Ovary 3-celled, fr. a dehiscent capsule, 



fl. in axillary clusters. . . .5. Cleistanthus. 



B. $ sepals or calyx-lobes imbricate. 



(a) Petals scale-like. 



<? disk 5-lobed . . . .6. Actephila. 



i disk of 5 bifid glands . . Andrachne (p. 562). 



(b) Petals 0, $ fl. in axillary, rarely 



terminal, spikes, racemes or 

 panicles. 



