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478 ROBINSON. 
KEY TO THE PHILIPPINE SPECIES OF LAPORTEA. 
Pistillate flowers distinctly pedicelled, not flabellately arranged. 
Leaves oblanceolate, lowest veins very short............................ 2. L. anacardioides 
Leaves usually much wider, lowest veins arched-ascending.......... 1. L, luzonensis 
Pistillate flowers flabellately arranged upon a flattened or merely concave re- 
ceptacle. 
Flowers crowded in more than one row on receptacle..................-- 3. L. densiflora 
Flowers forming a single row on the margin of the receptacle. 
Receptacles much enlarged in fruit. 
Mature leaves densely pubescent on both surfaces...............- 4. L. crassifolia 
Upper surface of mature leaves glabrous or nearly so. 
Mature receptacles usually over 1 em in diameter............ 5, L, batanensis 
Mature receptacles not over 8 mm in diameter, 
/ Pistillate inflorescence only moderately branched, tomentellose. 
6. L. meyeniana 
Pistillate inflorescence very diffusely branched, pilose........ 7. L. diffusa 
Receptacles not or only slightly enlarged in fruit. 
Leaves rigid: receptacles subtended by bracteoles 6 mm long or more. 
8. L. rigidifolia 
Leaves not rigid: bracteoles less than 2 mm long. 
Leaves gradually contracted to an acute or subacute base. 
Stipules merely ciliate or glabrous ......0..0.2 eee | . L. gracilipes 
Outer surface of stipules densely pubescent. 
Leaves oblanceolate, chartaceous.......0.0.....020.2.22000e eee ee 10. L. lanaensis 
Leaves wider, membranaceous or submembranaceous. 
ll. L. mindanaensis 
Leaf-bases much wider, cordate, truncate, or at least very obtuse. 
Under surface of leaves densely pubescent.............. Souksven’ 12. L. leytensis 
Under surface of leaves glabrous or only obscurely pubescent. 
Leaves thickly chartaceous ....................-::-::e:cesseesesses: 13. L. subpeltata 
Leaves membranaceous or submembranaceous...... ll. L. mindanaensis 
Flowers sessile in a purple, succulent, nearly closed receptacle.. 14. L. subclausa 
The pistillate flowers of L. venosa are as yet unknown, but it probably comes 
nearest to L, luzonensis: see text. 
1. Laportea luzonensis Warb. in Perk. Frag. Fl. Philip. (1905) 168. 
L. crenulata var. luzonensis Wedd. in Arch. Mus. Paris 9 (1856) 133. 
L. crenulata F.-Vill. Noviss. App. (1882) 204; Vidal Rev. Pl. Vasc. Filip. 
(1886) 255; non Gaudich. Bot. Voy. Uran. (1826) 498. 
Luzon, Province of Ilocos Norte, Bolo River, For. Bur, 13871 Merritt & Dar- 
ling: Province of Bataan, For.’ Bur. 2631 Meyer: Province of Laguna, Calauan, 
Cuming 522: Province of Batangas, Santo Tomas, Philip. Nor. Sch. 339 Aurelia 
Matvar, The following staminate or sterile collections are also probably referable 
here. Luzon, Province of Benguet, Mount Tonglon, Merrill 4838: Province of 
Bataan, For. Bur, 6522 Curran: Province of Laguna, Los Bafios, Elmer s. 
MiNpboro, Baco River, Merrill 1818 ; Subaan, For. Bur. 11379 Merritt. 
Local name: lupa, Ilocos Norte. 
- Laportea anacardioides sp: nov. 
I waiderdecen tis pistilliferis quam petioli longioribus, pedunculis titevibus, 
non receptaculum dilatatum efformantibus, perianthio subaequaliter 4- 
partito, achenio non vel vix ventricoso, stigmate anguste conico: foliis 
oblanceolatis, integerrimis, basi acutis’ vel subobtusis, apice acuminatis. 
