66 THE JOURNAL OF BOTANY 



its scandent habit. Bouton remarks of this " arbrisseau liane " 

 that it grows in the ravines in every part of the island of 

 Mauritius, and flowers almost all the year round. He refers to it 

 as a " plante medicinale." 



2. M. TRiCHOPHLEBiA Baker in Journ. Linn. Soc. xx. 66 (1883). 

 M, ')nacro2)oda Baker, loc.cit. xxi. 410. 



Central Madagascar : Baron, 497 ! 1764 ! 2181 ! 2293 ! 3088 ! 

 3642 ! 3644 ! 3974 ! 7017 ! Betsileo-land ! Baron, 107 ; East 

 Tmerina, Andrangoloaka, Hildebrandt, 3615 ! Hbb. Mus. Brit. 

 Kew. 



3. M. Landia Lam. 111. t. 157, 2 ; Poir. in Lam. Encyc. iv. 392. 

 M. holosericea Sm. in Eees, Cycl. xxiv. n. 6 (1819). M. latifolia 

 Poir. Encycl. Suppl. iv. 36. 



Mauritius ? Hb. Blackburn. Hb. Kew. 



In the absence of Poiret's type and the original of Lamarck's 

 figure {supra), I find considerable difficulty in identifying this 

 species. According to the figure in question, the leaf-bases are 

 noticeably rounded, and the ovate calyx-lobes and ovary short. 

 The only specimen I can find in the British herbaria which 

 matches this figure at all satisfactorily is the one quoted, origi- 

 nating from the herbarium of Mr. Justice Blackburn, now pre- 

 served at Kew. This, collected probably in Mauritius, I am 

 disposed to regard as the true M. Landia Poir. 



This is distinguished readily from the two succeeding species 

 in size of calyx and ovary on the one hand {M. Stadmannii), and 

 in leaf-shape on the other {M. mauritiensis). 



The confusion which has arisen among these three species is 

 not improved by the fact that De Candolle (DC. iv. 372) gives 

 M. Landia Sm. in Eees, Cycl. xxiv. as a synonym of M. Stadmannii 

 DC. Smith's M. Landia is certainly the same as M. Landia Poir. 

 and M. Landia Lam. 1. 157, for Smith quotes this figure under his 

 M. Layidia, and Poiret's description refers to the same plant. 



4. M. Stadmannii Michx. ex DC. Prod. iv. 372. Oxyanthus 

 cymosus Keichenb. in Sieb. M. Maur. {v. infra) ex DO. Prod. 

 loc. cit. 



Mauritius : Sieber ii. 79 ! Bojer ! Bouton ! Carmichael, 165 ! 



Bouton's label reads : " Vulg. Quinquina rudigera. Croit 

 dans les forets dans tous les quartiers de File. Arbrisseau se 

 couvrant de fleurs blanches. Fl. mois de Fevrier." This has 

 been confused with M. Landia (q. v.) ; but it seems to be quite 

 distinct in its long, sublinear calyx-lobes and its elongated ovary. 



5. M. mauritiensis Wernham, sp. nov. Eamulis sericeis ; 

 foliis lanceolatis, longe acuminatis, basi acutis, apice acutissimis, 

 supra asperulo-pubescentibus, subtus in venis sericeo-pubescen- 

 tihus, 2)etiolo dense flavo-sericeo; floribus . . . fructibus oblongis 

 sparse, pedicellis densius sericeis, corymbose dispositis ; calycis 

 limbo lobis triangulari-lanceolatis acuminatis acutis dense sericeis 

 coronatis. 



Mauritius: "in sylvis, ad radices montium," Bojer \ " Sur 

 les hautes montagnes," Hb. Blackburn ! Hb. Kew. 



