188 A. Engler. — Araceae-Aroideae. 



62. A. Thunbergii Blume in Rumphia I. (4 835) 105; Kunth, Enum. III. (1841) 

 4 9; Schott, Syn. (1856) 29, Prodr. (1860) 38; Prol. Fl. jap. (1866—1867) 133, 358; 

 Franch. et Sav. Enum. pl. jap. II. (1876) 5; Engl, in DC. Mon. Phan. II. (1879) 546; 

 Makino in Tokyo Bot. Mag. XI. (1897) 32 et in Jinuma Sömoku-Dzusetsu III. 19 (1912) 

 t. 15; N. E. Brown in Journ. Linn. Soc. XXXVI. (1903) 180; Matsumura, Ind. pl. jap. II. 1. 

 (1905) 17 1 . — Arum dracontium Thunb. Fl. jap. (1784) 233; Juel, PI. Thunberg. (1918) 

 75. — Jap. Urashima-Sö. — Monophyllum dioicum. Tuber subglobosum 2 — 3 cm 

 diametiens. Cataphylla lineari-lanceolata sursum angustata, summum circ. 1,5 dm lon- 

 gum. Folii plerumque solitarii petiolus breviter vaginatus circ. 3 dm longus, viridis 

 et rubro- vel purpureo-variegatus, lamina pedati-1 1 — 13-secta, costis posticis sursum 

 versis, segmentis intermedio usque 2 dm longo 2 — 3 cm lato interdum ansato excepto 

 sessilibus, lineari-lanceolatis vel oblongo-lanceolatis, longe acuminatis basin versus paul- 

 lum angustatis, lateralibus gradatim brevioribus et angustioribus. Pedunculus petiolo 

 duplo vel tertia parte brevior, 4 — 2 dm longus, sursum incrassatus; spathae tubus 

 cylindricus vel infundibuliformis, 5 — 6,5 cm longus, supra circ. 2 cm amplus, pallide 

 purpureus, subvittatus, fuscus, faucis marginibus lateralibus angustis recurvis atro- 

 purpureis, lamina fornicata, procurva, oblongo-lanceolata, cum acumine angustissimo 

 (circ. 2 — 3 cm longo) ultra 1 dm longa, 4 — 5 cm lata, intus nervis pallidis exceptis 

 atrobrunnea. Spadicis masculi inflorescentia tubi dimidium superans, circ. 2,5 cm longa, 

 floribus subsessilibus vel breviter stipitatis 3 — 4-andris, feminei inflorescentia cylindrica 

 3 — 3,5 cm longa, 1 cm crassa, appendix stipite fere 1 cm longo vel breviore suffulta 

 fusiformis parte fusiformi curvata circ. 5 cm longa, medio 4 mm crassa, in partem fili- 

 formem primum arrectam, deinde ± longe dependentem totam 2 — 3 dm longam atte- 

 nuata. Florum masculorum thecae ovoideae rima subovata aperientes. Pistilla ovoidea, 

 stigmate sessili discoideo parvo coronata. 



Subtropisches ostasiatisches Übergangsgebiet, — Kiushiu: Nagasaki, 

 (Maximowicz, It. II. — Herb. Bot. Gart. St. Petersburg, Herb. Berlin). — Nippon: 

 Yokohama (Maximowicz, It. II. — Herb. Bot. Gart. St. Petersburg, Herb. Berlin), 

 Kanosan an der Ostseite der Yedo-Bai (Dönitz — Herb. Berlin), Zenocema (Hilgen- 

 dorf — Herb. Berlin), Misaki (Hilgendorf — Herb. Berlin), Yamakita im Hakone- 

 Gebirge (Faurie n. 2933 — Herb. Berlin), Hakone-Gebirge und Fudsi (Thunberg), 

 Yokosuka (Savatier n. 1336), auf den Goto-Inseln (Faurie n. 4875 — Herb. Berlin — 

 blühend im Mai). 



Südliches und mittleres Japan: Insel Kiu-Kasan (Faurie, PI. jap. n. 5185 — '■ 

 Herb. Berlin). 



Var. heterophyllum (Blume) Engl, in DC. Mon. Phan. II. (1879) 105. — 

 A. heterophyllum Blume in Rumphia I. (1835) 110; Kunth, Enum. III. (1841) 20; 

 Schott, Syn. (1856) 30, Prodr. (1860) 55; Miq. Prol. Fl. jap. (1866—1867) 134; Cat. 

 Musei bot. Lugd. Bat. (1870) 95; Makino in Tokyo Bot. Mag. XI. (1897) (33), XV. 

 (1901) 134 et in Jinuma Sömoku-Dzusetsu IV. (1 912) t. 14; nee N. E. Brown. — Folii 

 segmenta sessilia oblonga, b,reviter cuspidata, intermedium quam lateralia fere duplo 

 minus. 



Japan (Bürger — Herb. Leiden); noch nicht wild gefunden nach Makino in 

 Tokyo Bot. Mag. XV. 134. 



63. A. dracontium (L.) Schott, Melet. I. (1832) 17, Syn. (1856) 28, Prodr. 

 (1860) 39; Blume in Rumphia I. (1835) 103; Kunth, Enum. III. (18 41) 18; Torrey, 

 Fl. New York II. (1843) 240, t. 123; Engl, in DC. Mon. Phan. II. (1879) 547; Chapraan, 

 Fl. South. Un. St. (1860) 440; Hemsley in Biologia Centr. Amer. III. (1882—1886) 417; 

 A. Gray, Manual ed. 6. (1890) 549, ed. 7. (Robinson and Fernald) (1908) 2 57; Britton 

 and Brown, Illustr. Fl. North. Un. St. (1896) 361; Ch. Mohr, PI. Life of Alabama in 

 Contrib. U. St. Nat. Herb. VI. (1901) 426. — Arum dracontium L. Sp. ed. 1. (1753) 

 964, ed. 2. (1763) 1368; Willd. Spec. IV. (1805) 478; Schkuhr, Handb. III. (1808) 

 216, t. 277; Bot. Reg. t. 668; Elliott Bot. South Carol. II. (t824) 629; Beck, Bot, 

 North. St. (1833) 381; Lodd. Bot. Cab. t. 1165. — Arisaema Boscii Blume in Rumphia 



