166 



RUMPHIUS'S HERBARIUM AMBOINENSE 



MARANTACEAE 

 (By Th. Valeton) 

 DON AX Loureiro 



DON AX CAN N I FORM IS (Forst.) K. Schum. in Engl. Bot. Jahrb. 15 (1893) 

 440; Rolfe in Journ. Bot. 45 (1907) 243. 

 Thalia cannaeformis Forst. Prodr. (1786) 1. 



Actoplanes canniformis K. Schum. in Engl. Pflanzenreich 11 (1902) 

 34 p. p., excl. syn. Maranta grandis Miq. quae est A. ridleyi K. 

 Schum. 



Arundastrum Rumph. Herb. Amb. 4: 22, t. 7. 

 Amboina, Soja and Way tommo, Robinson PI. Rumph. Amb. 520, August, 

 1913, along river banks and in forests, altitude 45 to 400 meters; between 

 Wae and Toelehoe and at Laha, Boerlage 191, 516, in Herbi Bog. 



Arundastrum Rumph. was originally reduced to Maranta 

 arundinacea Linn., as a variety, by Lamarck, Encycl. 2 (1788) 

 588, where it manifestly does not belong. Loureiro, Fl. 

 Cochinch. (1790) 11, placed it under Donax arundastrum Lour., 

 which is a species of Donax distinct from D. canniformis K. 

 Schum. By Willdenow, Sp. PL 1 (1797) 13, it was erroneously- 

 placed under the American Maranta tonckat Aubl.= Stromanthe 

 tonckat Eichl. Roxburgh, Fl. Ind. ed. 2, 1 (1832) 2, placed it 

 under Phrynium dichotomum Roxb., which is Schumannianthus 

 dichotomus Gagnep.; and Dietrich placed it under Maranta 

 dichotoma Wall., a synonym of the latter species. The synonymy 

 of Donax canniformis K. Schum. and of the several species in 

 the allied genus Schumannianthus is very complicated, but has 

 been admirably cleared up by Rolfe in Journ. Bot. 45 (1907) 

 242-244. 



PH ACELOPH RYN I U M K. Schumann 

 PH ACELOPH RYN I U M ROBINSONII Val. sp. nov. 



Folium buccinatum album Rumph. Herb. Amb. 5: 142. 

 Amboina, Mahija, Robinson PL Rumph. Amb. 521 (type), August 7, 

 1913, along small streams, altitude about 250 meters, locally known as 

 dauri; Waigama, Teysmann sine numero in Herb. Bog. (specim. fructif.). 



Herba bimetralis. Caulis florifer 150 ad 450 mm longus. 

 Folia longissime petiolata (pet. propr. 100 mm, vagina fere 

 1,200 mm), maxima late oblonga vel elliptica (lamina 400x250, 

 vel 470x240, vel 500x170 mm) apice attenuata vel subrotun- 

 data breviter (10 mm) apiculata, basi vulgo rotundata ad pe- 

 tiolum constricta acuta, glaberrima. Inflorescentiae pedunculo 

 100 ad 200 mm longo, rhachi glabra, singulae foliis 1 ad 2 

 comitatae subsimplices, haud interruptae, ramis paucis (2 ad 

 4) e bracteis inferioribus exortis erectis, spicae primariae bre- 

 viores, internodia inferiora 30 ad 65 mm longa, superiora brevia 



