Mr. Bentuam’s Account of two new Genera allied to Olacinee. 677 
seo, abortu monospermo, rarius 2—3-spermo. Semen inversum, sæpius 
placenta cum illo a basi concreta spurie erectum, umbilico spurio lato 
imo loculo affixum, nunc ab apice loculi lateraliter pendulum. Embryo 
in axi albuminis copiosi carnosi, rectus, apici fructus proximus, nunc 
brevissimus rarius dimidio albuminis longior, radicula apicem fructus 
spectante brevissima, cotyledonibus semiteretibus, plumula inconspicua. 
Arbores v. frutices erecti v. interdum scandentes, inermes v. ramis axil- 
laribus spinescentibus armati, glabri v. parce pubescentes. Folia al- 
terna simplicia, integerrima, exstipulata, eglandulosa. Flores herma- 
phroditi v. abortu polygami, nunc axillares distiche v. irregulariter race- 
mosi, spicati v. cymosi, nunc terminales cymoso-paniculati, rarius soli- 
tarii laterales v. axillares. Bracteu squamæformes sæpius minute, rarius 
juniores imbricatz. Bracteolæ parvæ in cupulam connate, v. nullae. 
Tribe I. OLacezx. 
Ovarium basi dissepimentis spuriis (rarius evanidis) 3—4-loculare, apice 1- 
loculare, placenta centrali dissepimentis spuriis basi adhærente superne 
libera. Ovula tot quot loculi spurii ex apice placentæ pendula. Semen 
spurie erectum. Jnflorescentia axillaris, racemosa, racemis rarius ad 
florem unicum reductis. 
1. Hersrerta*. Calyx liber, fructifer maximus patens. Petala 5 libera v. 
basi connata. Stamina numero petalorum dupla, omnia fertilia, filamenta 
libera, hypogyna v. basi petalis adnata. Flores parvi, glomerati. 
2. XiMENIAT. Calyx liber, fructifer immutatus. Petala 4—5, libera. Sta- 
mina numero petalorum dupla, omnia fertilia, libera, hypogyna. 
* I have examined a specimen in flower and fruit in Mr. Miers’ herbarium, of a species scarcely, if 
at all, distinct from H. parvifolia, Sm., although a native of the Organ Mountains instead of Sierra 
Leone. Of the other species I have seen only the specimens in the herbaria of Banks and Smith. 
+ X. parviflora, Benth. (Pl. Hartw. p. 7), and X. americana, from Timor specimens, from the Paris 
herbarium; ZEthiopian specimens, Kotschy (n. 452) ; and American ones, Cuming (n. 1120), Gardner 
(n. 938); Blanchet (n. 2787), and several others, all in flower only. I have not seen the fruit. In 
describing the X. parviflora, I had overlooked the circumstance that the dissepiments of the ovary 
did not reach the point where the ovules are inserted, a fact first pointed out to me by Decaisne in 
the autumn of 1839. 
AT 2. 
