PITTIER—-PLANTS FROM COLOMBIA AND CENTRAL AMERICA. 73 
mm. long; perianth formed of three free divisions, these ovate-acuminate, rounded 
at tip, narrowed at the base into a short claw, imbricate, 3mm. long and 2.7 mm. broad; 
ovary sessile or subsessile, globose, narrowing into a persistent stylar column 3 to 4 
mm. long; styles 3, reflexed, early caducous. Male flowers in clusters of 6 to 10, sub- 
tended by ashort, broad bract and surrounded by a few clavate glandules, the flowers 
mixed with glandlike bracteoles; perianth yellowish white, campanulate, bilobate, 
about 3.5 mm. long; stamens 2, exserted. 
Capsules sessile or subsessile, large, globose, 18 to 20 mm. in diameter, coriaceous, 
crowned by the persistent stylar column. Seeds lenticular, more or less orbiculate, 
about 10 mm. long and wide, obtusely cristate on the edge and 
rarely apiculate. 
Cotomsra: El Chaparral, State of Tolima, in the Magdalena 
Basin, alt. about 800 meters, Andrés Roché (U.S. Nat. Herb., 
nos. 690468-690470); same locality, Wercklé, Inst. Fis. Geogr. 
Costa Rica, no. 17272 (U. 8. Nat. Herb., no. 578904). FIG, 79.—Tip of leaf of 
Sapium hippomane Meyer, Prim. Fl. Esseq. 275. 1818; Pax  Sapium hippomane. a, 
in Engl. Pflanzenreich IV. 1474: 231. 1912. en Showing’ auricle 
Puates 44, A, 45. Figures 79-81. goth scale 3. ; 
Sapium hemsleyanum Huber, Bull. Herb. Boiss. IT. 6:362.1906. 
Sapium obtusilobum Muell. Arg. Linnaea 32: 116. 1863; Pax, op. cit. 229. 
A tree 12 meters high, with a short trunk 32 cm. in diameter at the base, an elongated 
crown, and horizontal or subascending limbs. Bark smooth, grayish, 
Foliage thick, the rather long-petiolate, entirely glabrous leaves covering the whole 
branchlet. Petioles slender, 1 to 4 cm. long, provided at the upper end with a pair 
of long (1 to 2.5 mm.), cylindric-conical glands, distant 5mm. or less from the base 
of the blade. Leaf blades elliptic, dark green above, paler and finely white-dotted 
beneath, 5 to 12 cm. long, 2.5 to 5 cm. broad on the floriferous branchlets, 15 to 25 cm. 
long and 5 to 6 cm. broad on the young, sterile growth; base cuneate or subacute; 
apex more or less abruptly contracted and end- 
ing in an incurved, cucullate-glandulose tip, 
often with small lateral auricles; main nerve 
impressed above, prominent and more or less 
angular beneath; primary veins slender, arcuate, 
prominent on both faces, about 18 on the leaves 
of the floriferous branchlets, 28 on those of the 
younger growth; margin (slightly revolute in 
dry specimens) remotely denticulate-glandulose 
(the glandules caducous) and with occasional 
larger, hydathodal teeth. Stipules scarious, 
F1G. 80,—Male flower of Sapium hippomane. ovate or subacuminate, very small. 
a, Bracts with lateral glandule; d, floral § Floral spikes terminal, single or with a basal, 
bud; c, mature flower; d, stamens; ¢, half asiilary branchlet, slender, entirely glabrous, 
of perianth, showing form of lobe and with . . 
interfloral glandules at base. Allscale6. UP to 16 cm. long, bearing either male flowers 
only or both male and female, the female num- 
bering up to 10, inserted at the base of the spikes. Floral glands ovate, larger at 
the base of the spikes (3 to 3.5 mm. long, 2 mm. broad). Bract short and broad 
(about 15 mm. long and 2 mm. broad), with the upper margin scarious, rounded, 
glandulose-pectinate or irregularly denticulate, and bearing on one side only 
(in male flowers) or on both sides (often in female flowers) a basal, erect, clavi- 
form, purple glandule. Male flowers in clusters of 4 to 8, sessile, intermixed with 
filiform, glandular, persistent appendages; perianth about 1.5 mm. long, purplish, 
the two lobules entire and more or less rounded; stamens long-exserted (nearly 2.5 
