168 DR. J. D. HOOKER ON THE FLORAS OF MALAYA 



angustis, calyce parvo, petalis suberectis angiiste lanceolatis enerviis basi secus costam 



incrassatis, stainiuibus hypogynis basi liberis non incrassatis, unico fertili elongato, 



ceeteris ad squaniulas subulatas reductis. 

 M. Kemanga, Blume, Mus. Lugd. Bat. i. 202; Miquel, Flor. Ind. Bat. i. 634. M. faiida, Bl. (non 



Loureiro), Bijd. 1153; Hassk. in Flora, vel Bot. Zeit. 1844, p. 622. excl. synon. 

 Hab. Borneo septentrionali, Lotv [nom. vern. "Binjue"). Java v. Moluccas, /c/e Miquel. In cultis 

 archipelagi \nAic\, fide Blume. 

 I have called this fine species Ilmigifera Kemanga of Blume, on the faith of a speci- 

 men so named received from Dr. Miquel, from which it differs only in the rather longer 

 petiole ; but it is extremely unlike the plate of Rumphius (i. p. 99), quoted by Dr. Miquel 

 in his ' Flora Indise Batavse,' i. p. 634, as belonging to this plant. It accords well with 

 Blume's description and Hasskarl's quoted above. 



There are several very distinct modifications in the insertion of stamens in Mangifera. 

 In the present plant they are all free and absolutely hypogynous, the gynophore, which is 

 prolonged in the closely allied genus Gluta, being here so short as to be almost obsolete. 

 In M. fcetida and IZorsfieldll, on the other hand, the filaments are all connected at the 

 base into a thickened fleshy ring, quite distinct from the calyx, and forming a hypogynous 

 tube or cup. In 31. Indica and its allies, the ovary is seated within a very thick, deeply 

 5-lobed sub-perigynous disk, from the inner margin of which the stamens rise ; this disk 

 may, however, be equally well considered to be the very much incrassated bases of the 

 filaments, which are connate at their insertion. In all these the flower is much shorter 

 than in M. fcetida and M. Kemanga, the petals more spreading from the base, and furnished 

 with several thickened veins. 



A third modification is presented by a small-flowered and leaved Malacca species {31. 

 Griffithii *), in which the disk is hypogynous, very large, oblique, unequally lobed, and 

 bearing one short perfect stamen within its mouth, and no imperfect ones. 



Tab. XXIIL fig. 1. unexpanded, 2. expanded flower; 3. petal; 4. stamen, staminodia, and pistil; 5. 



pistil : cdl magnified. 



Nov. Gen. Pentaspadon, H. f. 



Flores hermaphroditi. Calyx parvus, 5-partitus, lobis imbricatis. Petala 5, calyce multo majora, oblonga, 

 patentia, valde imbricata. Discus annularis, suberectus, 10-lobus. Stamina 5, parva, brevia, basi disci 

 extus inserta, cum staminodiis totidem apice capitellatis v. spathulatis alternantia. Ovarium disco in- 

 sertum, depressum, villosum, l-loculare, stylo brevi recurve crasso uno latere e basi ad apicem late 

 stigmatifero, ovule solitario medio loculi appenso pendulo. Fructus ignotus. — Arbor magna. Folia 

 altcrna, exstipulata, impari-pinnata, Joliolis oppositis, :i-4-jugis, petiolulatis, integerrimis, glaberrimis, 

 nblongis, acuminatis. Paniculse axillares, pedunculatce, ramosce, ramulis piatentihus, nltimis pedicel- 

 Usque glaberrimis. Flores parvi, albi. 



1. Pentaspadon Motleti, H. f. 



Hab. Borneo australi, prov. Banjarmassing, invenit beat. Motley. 



* M. Griffithii (H. f.) ; foliis petiolatis oblongis v. obloiigo-obovatis obtusis 3-4" longis, U-2" latis, paniculis termi- 

 nalibus erectis pubescentibus, tioribus parvis, petalis brevibus, nervis 2-3 basalibus incrassatis, disco hypogyuo in- 

 Ecqualiter lobato, stamine 1 brevi intra margiuem disci inserto. Hab. Malacca, Griffith. 



