Pterotropia.] ARALIACEAE. 149 
latyphyllum, Seem. 1. -- A smaller tree, vite glabrous. 
nat < ovate, broader than sine 2—21/2/ dX 21/2—31/2‘, mucronate or 
suddenly and shortly acuminate, truncate at the base, entire or shortly 
dentate, with thickened margin, coriaceous and shining, on long spread- 
ing petioles of 13/4—2‘, the common petioles 2'/.—4‘. Panicles single 
or 3 together, very open, 4—6‘ long, pedunculate. Umbellets 5 or 6-flowered, 
the pedicels 1—3“. Flowers 3“. Stigmas 5, rarely 4, incurved or truncate, 
triangular on a very short and thick stylopod. Drupe subglobose, 3—3"'/2“ 
in diameter, 5- or 4-angled when dry. — Panax ra $3 yllum, H. & A. 
l. «. — Hedera platyphylla, Gray, 1. c. p. 720, pl. 9 
oe age two highest peaks of Oahu, Konahuanui! and Kaala ! 3000— 4000 ft. above 
the s 
~ 
' 2. PTEROTROPIA, gen. nov. 
Flowers emree aa ke Calyx-border slightly prominent and aa 
dentate. Petals 5—7—9, triangular, eh thick, uncinate at the apex, 
cohering or saa spreading. Stam as many as petals and shorter, 
the ovoid introrse anthers inserted shove the base on short complanate 
a short stylopod when the stigmas number 4 or 5. Drupe somewhat 
succulent, globose or ovoid, with conical apex, round, not angular, ringed 
above or below the middle by the calycine border and aici above. 
Pyrenae with a thin endocarp, scarcely separable, ovoid or slightly com- 
pressed, with a broad back and a prominent ridge on either side. Seeds 
with a ventral ridge or almost cylindrical, the albumen fleshy and even, 
the eS radicle fusiform, twice as thick and long as the minute 
coty] — Trees with a glutinous sap. Leaves alternate, with clasping 
pe tioles paca stipules, impari-pinnate with 13—21 entire leaflets and 
generally furfuraceous with a scattering scaly or stellate pubescence, the 
hairlets single-celled. Inflorescence terminal and lateral, the flowers um- 
bellate-racemose on the umbellate-racemose branches of a panicle with a 
short rhachis, not articulate at the nodes and continuous with the calyx. 
Bracts minute, triangular subulate, early deciduous. — The petiole of the 
terminal leaflet al a when more than three times the length of the 
lateral ones 
& distin- 
A genus of 3 Hawaiian species, in many respects like ts. atta Nh a a 
guished by the pinnate leaves, the meiomerous ovary and the partly na . Two of 
the following species were described by H. Mann and b; . placed under the genus 
2 ay nd s rT gro 
than because its ovary is often 2-celled; an artificial principle “wich eer eau 
Separate from the same its near congener P Kauaiensis, which he assigned to Miqu 
genus Agalma. 
