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



Nov. Gen. Disepalum, H. f. 



Sepala 2, ampla, ovata, concava, valvata. Petala 4, anguste lineari-spathulata, incurvo-ascendentia, inter 

 se remota, ad marginem tori depress! adnata et persistentia ! Stamina numerosa, multiseriata, con- 

 nectivo apice truncate vix dilatato. Torus latissimus, medio leviter concavus. Carpella 10-15, 

 strio-osa, stylo brevi conico tereti, stigmate terminali, ovulo solitario? prope basin loculi. Fructus 

 (Jeest. — Frutex b-pedalia, glaberrimus, Borneensis, ramis gracUibus, Folia 21-3^" longa, bifaria, 

 elliptico-obovata v. lanceolaia, utrinque angulata, ajnce caudato-acuminata, creberrime pellucido- 

 punctata. Pedunculi terniinales, solitarii, graciles, elongati, uniflori. Flores sub P' diam., virides. 



1. Disepalum ANOMALUM, H. f. 



Hab. In insulse Borneo locis humidis depressis prope Sarawak, T. Lobb. 



Of this very remarkable plant, in some respects quite as anomalous as Eupomatia, I have 

 only two small specimens. It differs in habit from any Anonaceous plant known to me, 

 and approaches SchizandrecB in texture and some other respects. The minute punctation 

 of the foliage is peculiar ; the stamens and ovaries are typically Anonaceous ; but the two 

 valvate sepals, and four organs which appear to represent the petals, are quite unlike any- 

 thing else in the Order. Technically it will rank in the tribe Uuonecc ; but I know of no 

 genus to which it is at all nearly allied. 



Tab. XX. A. fig. 1. flower; 2. the same, cut vertically; 3 and 4. front and back views of stamens; 5. 

 carpel; 6. vertical section of the same: all magnified. 



Nov. Gen. Sph.^koxhalamus, H. f. 



Sepala 3, maxima, orbiculata, rigide membranacea, subfoliacea, erecta, imbricata. Peiala 6, biseriata, 

 elongato-spathulata, crasse coriacea, imbricata? 3 interiora angustiora. Torus giobosus. Stamina 

 valde numerosa, dense imbricata, obcuneata, connectivo ultra loculos dilatato truncato. Carpella 

 numerosa, oblonga, strigosa, stylo brevissimo obtuso ; ovulis 2 ? superpositis, ventralibus. Fructus 

 deest. — Frutex lO-pedalis, Borneensis, pulcherrimus. Folia magna, subsessilia, elongato-lineari- 

 lanceolata, acuminata, glaberrima, 1^-2-pedalia, basi subcordata apice acuminata. Flores speciosi, 

 rubro-aurantiaci, 3" longi. 



1. SpH^ROTHALAMUS IXSIGNIS, H. f. 



Hab. In sylvis insulae Borneo ora septentrionali, T. Lobb. 



I have seen only a flower, leaf, and colom^ed drawing of this remarkable and beautiful 

 plant. It belongs to the tribe Uvariece, and apparently to the section with more than 

 one ovule, and will thus rank near Uvaria itself. The ovaria are very minute indeed ; and I 

 have further had great difficulty in analysuig them, on account of the dense consistence of 

 their walls : these are full of indurated wood-cells above, which it is difficult to discri- 

 minate from ovules after both have been dried. 

 Tab. XX. B. leaf; and XX. C. flower: fig. 1. outer, and 2. inner petal; 3. torus, with a few of the 



lower series of stamina below, and ovaries at the apex ; 4. stamen ; 5. ovary ; 6. long vertical section 



of the same: all, but 1, 2, and 3, magnified. 



