150 ARALIACEAE. [ Pterotropia. 
A repeated reyiew of our Araliads has led me to regard the present and the tw 
following genera as a continuous series, in which it is impossible to draw es sae 
lines of division, and I saueha not have ae to unite them all in a single genus 
have draw i i from other 
yt ls, 
wice “the typical number, may fairly be added as a collateral branch my our group. 
eat sae at the base; ide ringed about the middle or above 1. P. dipyrena. 
Leaves rounded at the bas 
Dr rin, ged about the mid or below. F ’ . a. Geceetie iensis. 
e basi 
P. dipyrena, Hillebr. A apa a 1220 ft. ees sparingly 
branching, the young branches mealy, as is the entire inflorescence, in- 
eluding calyx and corolla, with small grayish scalelets which bear short 
and stiff 1-celled hairs. Leaves 1—2 ft. long, with 13—15 leaflets, these 
ovate to Pi Nis 3—6' X 21/2—3', on petioles of 3—6”, acuminate 
cordate at the base, sHatsota glabrous above, acer desea below. Panicle 
large and poe its 5 primary branches 8—12‘ long, mostly alternate 
on a common rhachis of 2—3’, the were branches 1—2‘, mostly 
rnate, the flowers racemose and s hata on pedicels of 3—4". 
Bracts short triangular, 1“. Calyx ee the etals 6—7, 
ing, but free at last, 2—3” long, ee from a broad emarginate 
ase. Stamens accumbent on the ovary, which is free (superior) in its 
upper half. Drupe ovoid, 6“ long, ringed with the calyx-border at the 
middle or above. Stigmas 3, or 2 or 4, sessile and discreet on the conical 
disk or slightly raised. Peecas coriaceous, inseparable. — Heptapleurum 
dipyrenum, a Mann, Enum. no. 155, ipanax Mannii, Seem. Journ. 
Bot. VI, a i 
anai ink highest ridge; E. Maui! 8. slope of Haleakala, 3000—4000 ft. (Lydg.); 
i geaog Kawathac tuka. — The Maui form has more elongate and peach leaves 
2..P. Kauaionsis, Hillebr. — A tree 30—50 ft. high, the smooth hae 
erect and sparingly dividing at the end into ascending branches, the young 
shoots and inflorescence tomentose with fawn-colored stellate seal as 
re. Leaves 1'/2--2 ft. Leaflets 13—21, ovate-oblong, 4—8’ xX l'/2— 
igh, on petioles of 3—4", acuminate, rounded at the base, chartaceous 
to coriaceous, sprinkled ave but densely tomentose underneath. Panicle 
as before. Petals 6—7, rarely 9, tomentose, 2!/,—3”. Ovary generally 
