358 WILSON EXPEDITION TO CHINA 
Flores aperti 2.5-3 cm. lati, tubo ad 12-15 mm. longo; sepala (fide Kurz) 
tria in fructu amplificata, ad 4 em. longa ........ 5. P. spectabilis. 
Ovaria ovulis 2 instructa. 
Stigmata staminaque fere ut in Euporana, discus distinctus. 
Subgen. 2. PSEUDODINETUS. 
6. P. dinetoides. 
Stigmata plus minusve claviformia, paulo longiora quam lata, apice emarginata; 
stamina l-v. 3-seriatim in tubo inserta filamentis liberis quam antherae 
distincte brevioribus; discus nullus (an semper?). Subgen. 3. DINETUS. 
Sepala in fructu omnia amplificata, aequalia; flores parvi, 8-12 mm. longi. 
Sepala in fructu ad 2.5 cm. longa et 9-11 mm. lata, elliptico-oblonga. 
7. P. malabarica. 
Sepala in fructu ad 12-15 mm. longa, versus apicem 3-4 mm. lata, oblongo- 
spathulata ee 5 See 09 V. (ue Rn russo n ves 8. P. racemosa. 
Sepala in fructu inaequalia 3 valde 2 minus aucta; flores majores, 2.5-3.5 cm. 
Jongi. 
Sepala in flore subaequalia; stamina parte basali leviter dilata 1 seriatim 
inserta; tubus intus infra stamina circa gynaeceum pilosus. ; 
Sepala fructifera majora circiter 1 cm. lata; bracteae inflorescentiae 
parvae, lanceolato-filiformes . .. ....... o P. grandiflora. 
Sepala fructifera majora (fide Kurz) vix 4 mm. lata; bracteae inflores- 
centiae foliaceae v. lanceolatae, caudatae . . . 10. P. stenoloba. 
Sepala in flore distincte inaequalia; stamina in tubo haud dilatato 3- 
seriatim inserta; tubus tantum ima basi intus circa ovarium pilosulus. 
11. P. triserialis. 
ENUMERATIO SPECIERUM GENERIS PORANAE. 
Subgen. 1. EUPORANA Peter in Engler-Prantl, Nat. Pflanzenfam. IV. Abt. 
3, 24 (emend.) (1891). 
The type of Porana is P. volubilis Burman, the ovary of which contains 4 ovula 
and bears a two-cleft style. I think it best to refer to Euporana all the species with 
ovaries containing 4 ovula. All those species have globular stigmas. 
1. Porana volubilis Burman, Fl. Ind. 51, t. 21, fig. 1 (1768). — Roxburgh, Fl. 
Ind. II. 40 (1824); ed. 2, 465 (1832). — Wight, Icon. Pl. Ind. Orient. II. t. 347 
(1843); Ill. Ind. Bot. IJ. t. 1685, fig. 8 (1850). — Choisy in De Candolle, Prodr. 
IX. 436 (1845). — Kurz in Jour. Bot. Xl. 137 (1873). — Clarke in Hooker f., Fl. 
Brit. Ind. IV. 222 (1883). — Koorders, Excursionsfl. Java, IJI. 114 (1912). 
INDIA. Malaya: (No. 58741, Herb. Griffith); without locality (No. 2000, 
Herb. Wight). 
2. Porana discifera Schneider, n. sp. ae 
Frutex alte scandens; ramuli biennes purpureo-brunnei, contorto-striati, len- 
ticellosi, sparse pubescentes, floriferi dense flavo-tomentelli. Folia late cordato- 
rotundata, basi profunde et subanguste cordata, apice satis subito late acutata, 
1 Bentham, F. v. Mueller and Peter refer to Porana as a distinct subgenus also 
Duperreya sericea Gaudichaud, Voy. Freyc. Bot. 1.452, t.63 (1826) (Ipomoea modesta 
F. v. Mueller, Fragm. Phys. Austral. IL. 22 [1860]. — Porana sericea F. v. Mueller, 
L. e. VI. 100 [1867]) from Australia. But this plant is so distinct regarding the single 
axillary flowers, the linear leaves with very short petioles, the shape of the flowers 
and the silky pubescence that I think it best not to unite Duperreya with Porana. 
