90 . FLORA VITIENSIS. 
obovatis; antheris oblongis subobtusis v. acuminatis, majorum connectivo infra loculos breviusculo 
et ad insertionem filamenti antice 2-lobo.— M. Vitiense, Naud. Melast. p. 141.—Common throughout 
the Viti group, in open places (U. S. Expl. Exped.; Seemann! n. 180; Milne! Sir E. Home! 
Harvey! M‘Gillivray!), Aneitum, New Hebrides (Milne! M‘Gillivray !), New Caledonia Labillar- 
diére! ex Herb. Webb. 
I have no doubt about the identity of M. denticulatum and M. Vitiense. The anthers are not always 
so acuminate as they are in Labillardiére’s figure; very frequently they are obtuse, though never to the 
same degree as in JM. Tuitense.* The flowers vary from almost pure white to deep pink. 
2. M. Nove-Hollandiz, Naud. Melast. p. 156; ramis teretiusculis furfuraceo-ferrugineis v. 
strigillosis; foliis petiolatis oblongo-ovatis ellipticove-lanceolatis acutis integerrimis, adjecto utroque 
nervo submarginali 5-nerviis, supra strigosis, subtus setulosis; floribus ad apices ramorum 5—7-nis, 
interdum paucioribus aut numerosioribus, corymbosis v. umbellatis; calycis tubo strigoso-candicanti, 
dentibus acutis tubum zequantibus, denticulis minutis acutis; petalis elliptico-obovatis.— M. Banksii, 
A. Cunningh. in Sched. Herb. et in Steud. Nom. Bot. ed. ii. ex parte.— Common in Viti Levu 
(Milne!) and Ovalau, about Port Kinnaird (Seemann! n.179), Queensland (Banks! Cunningham ! 
Forster !). : 
I fancy this must be the plant which A. Gray, with a mark of doubt, referred to M. polyanthum, for 
which, indeed, at the first blush it may well be mistaken. The calyx-tube is covered with glossy whitish 
pales. I am not aware that Cunningham ever gave a definition of his M. Banksii, and I should be 
inclined to refer some of his specimens to which that name is attached to M. denticulatum.t 
Ordo XXXVIII. RHIZOPHORACEZE. 
I. Haplopetalon, A. Gray, Bot. Wilkes, p. 608. t. 7C. Calyx profunde 4—5-fidus, lobis trian- 
gularibus zstivatione valvatis. Petala 4—5, obovata, calyce inserta, fere exunguiculata, integerrima, 
carinata, sestivatione involuta, decidua. Stamina 16-20, brevissima, 1-serialia, margini disci perigyni 
tenuis inserta; antherz ovales, introrsz, 2-loculares, longitudinaliter dehiscentes, filamentis subu- 
latis equilonge. Stylus brevis, apice 4—7-fidus, lobis linearibus demum patentibus apice stigmatosis. 
Ovarium depressum, calycis tubo (mediante disci) semiadnatum, 1-loculare. Ovula 8-10, anatropa, 
e columna centrali geminatim appensa.—Arbuscule glabre; folis oppositis oblongis v. obovatis 
obseure serrulatis v. subintegerrimis; stipulis interpetiolaribus caducis; pedicellis in axillis laxe 
fasciculatis. 
1. H. Richii, A. Gray, Bot. Wilkes, p. 608. t. 76; foliis oblongis v. obovato-ellipticis obtuse 
acuminatis v. obtusis in petiolum attenuatis, obscure serrulatis, glabris; alabastris pubescentibus ; 
calycis segmentis petalisque 4; styli lobis 4—5.—Bua Bay, Vanua Levu (U.S. Expl. Exped.). 
2. H. Seemanni, A. Gray in Bonplandia, vol. x. p. 37, et in Proceed. Amer. Acad. vol. v. 
p. 318; foliis obovatis subtus cum ramis novellis molliter pubescentibus; alabastris hirsutis; calycis 
segmentis petalisque szepius 5; styli lobis 7.— Island of Kadavu (Seemann! n. 184). 
* M. Taitense, DC. Prodr. vol. iii. p. 144; Naud. Melast. p. 141 (M. Malabathricum, Forst. Prodr. n. _ 
193 (non Linn.); Sol. Prim. Fl. Ins. Paeif. p. 256, et in Parkins. Drawings of Tahit. Plants, t. 48), does not 
seem to have been found as yet out of the Society Islands. It has narrower leaves than M. denticulatum, 
invariably white flowers (judging from Solander's, Forster's, Parkinson's, and Pickering's notes and draw- 
ings), and differently-shaped, always obtuse anthers. I have seen specimens from Banks and Solander, 
Forster, Barclay, and Bidwill. E 
+ An allied Australian species, which Dr. F. Mueller has distributed as M. Nove-Hollandia, and 
named M. Malabathricum in his * Fragmenta, vol. iv. p. 161, collected in Arnheim Land and at Port 
Essington (Armstrong! n. 354), I hold to be new. It is M. velutinum, Seem., and may be known by 
its ovate or ovate-oblong, acute or shortly acuminate, 5-ribbed leaves, which on the upper surface are softly 
strigose, and on the lower covered with a thick velvety, generally rusty tomentum. 
