134- SERTULUM CHINENSE SEXTUM.
sence of ripe fruit and seeds, it is impossible to say whether it belongs to the subsection Gramles or to 8peciois(E ; but I believe its nearest ally to be L. genibiijlora, F. Schmidt, of which I possess specimens from the Mau- chmian coast (Bushnell), and from Sachalin (Conolly). It is perhaps the plant doubtfully refeiTed by Bunge to L. Uuifolia, respecting which he gives no further information.
9. Macaranga Sampsoni, n.sp.; arborea, dioica, ramis ramulis petio- lisque flocco fulvo demum deraso vel evanesccnte obtectis, foliis coriaceis orbiculari- vel deltoideo-ovatis breviter calloso-dentatis apice subito au- gusto-cnspidatis basi late rotundatis atque angustissime peltatis penni- atque basi subpalmati-nerviis junioribus fulvo-floccosis maturis supra gla- berrimis subtus ferrugineo-hirsutis atque granulis flavis glandulosis dense obsitis costulis venisque secundariis infra promiuulis 5-6 poll, longis, 2>^-h poll, latis, petiolo 3-5-pollicari pubescente, paniculis ^ folio triplo brevioribus a basi fere ramosis, bracteis trilinealibus ovato-hanceolatis caudatis utrinque 1-3-dentatis dense ferrugineo-hirsutis atque glandulis nonnuUis flavis conspersis, floribus 5-6 fasciculatis bracteis superatis, perigonii profunde 3-lobi lobis ovatis acutis villoso-hirsutis, stamini- bus plerumque 3 rarius 4 antheris semper 4-locularibvis, paniculis fructi- geris laxis petiolo plerumque cii"c. fequilongis, bracteis iiti in ^ , cap- sulse coccis binis ultra medium connatis ovoideis subcompressis inermibus glandulis ceraceis flavis densissime obtectis 2-2| lin. longis, stigmatibus arete adpressis recurvis coccorum verticem attingentibus, seminibus ovoi- deis testa fusca rugosa.
In silvis supra coeuobium, Ting-ii-shan, secus fl. West Kiver, 80 mill, pass, a Cautone occasum versus (^ floriferam d. 15 Junii 1869, eodemque loco denuo $ fructigeram d. 10. Julii 1870, legit indefessus Sampson, (Exsicc. n. 15G20.)
This falls into Joh. Mueller's section Mappa ; but it does not agree apparently with any species described by him, and his subdivisions are purely artificial, and arranged solely to facilitate determination ; though the characters he relies on are by no means constant, as, for example, the relative length of limb and petiole. Dr. Hooker has recently, in his edition of the late Professor Harvey's ' Genera of South African Plants,' restored the genus Mappa. It seems to me, however, impossible to re- gard it as generically distinct from Macaranga, which in respect of priority is eighteen years older. Mappa, moreover, is objectionable as a name, from its too great resemblance in sound to the Olacaceous genus MappUt.
10. RottboUia molUcoma, n.sp.; culrais farctis ereetis 4-5 pedalibus tomentosis hinc latere canaliculatis, foliis e basi rotundato-cordata lanceo- lato-linearibus acuminatis cum vaginis nodisque dense molliter sericeo- hirsutis inferioribus pedalibus et ultra S lin. latis, ligula scariosa vix pro- ducta, spicis axillaribus solitariis folio din involutis fragillimis tripollicari- bus, spiculas sessilis gluma exteriore crassa dimidiato-ovata conspicue tessellato-scrobiculata pilosa, spicula pedicellata ad rudimentum minimum reducla.
In fossis et ad margines fruticetorum ins. Danorum, Whampoae, primus detexi m. Octobri 1861. (Exsicc. n. 7558.)
Apparently a quite distinct s})€cies, which Dr. Thwaites considers very close to his R. nigrescens ; which it is not unlike in aspect, though with broader leaves, and difl'erences in the floral characters.
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