THE LICHEN STMBTOSIS 219 



become interesting. Beyond older bare generalizations as iofniticose, 

 cr/istaceous, gelatinous, etc., forms, the homiomeroits and hetero- 

 merous types of Wallroth (1825), and the radial as opposed to dorsi- 

 ventral of Goebel (1900), one gets little from a text-book of Lichens 

 beyond a mass of particularly elegant but vague terminology (Crom- 

 bie, 1894, p. 1). 



(To be continiied.) 



ALABASTHA DIVEKSA.— Part XXXIII*. 

 By Spexcer Le M. Moore, B.Sc, F.L.S. 



(Continued from p. 195.) 



3. Miscelljlxea Africaxa. 



Erythroxylace^. 



Nectaropetalum congolense, sp. nov. Arbor 2o-meti-alis superne 

 breviter ramosus ; ramulis subteretibus cinereo-corticatis foliosis 

 glabris juvenilibus ramentis arete approximatis onustis ; foliis brevi- 

 petiolatis ovato-oblongis obtusis breviterve acuminatis basi obtusis 

 integris pergamaceis glabris costis lateralibus utrinqiie 8-12 paullo 

 ultra medium dichotomis baud bene aspectabilibus ; stipulis cymbi- 

 formibus obtusis vel acutis cito evanidis ; florihus in cymas pro 

 intlorescentia perpaucas breves pauciHoras ex axillis ramentorum ortas 

 ordinatis ; pedicellis Horibus subiequilongis ; calycis segmentis triangu- 

 laribus obtuse acutis ; petalis cal^^ce paullo longioribus breviter unguicu- 

 latis oblongo-obovatis obtusissimis juxta basin nectario brevi integro 

 onustis; Jilamentis ima basi connatis superne angustatis ; ovario 

 anguste oblongo-ovoideo 2-loculari ; atylo perbrevi stigmate majus- 

 culo peltato-bilobulato terminato ; ovuUs quove in LjcuIo solitariis 

 uno solummodo maturante. 



Mayumbe, river Lufo ; Gossiveiler, 7939. To this belongs 7773 

 from the Curanda river between the N'Zanga and the Lufo; also 

 8184 from Belize. 



Folia usque 10x4-5 cm., ssepius ±7x3 cm., pag. sup. nitidula, 

 in sicco.fusco-olivacea, subtus pallidiora neenon opaca ; petioli 5 mm. 

 long, "^nflorescentise circa 10 x 7 mm. Pedicelli mox nutantes, 

 2-3 mm. long. Calyx totus 2 mm., lobi soli 1 mm. long. Petala 

 alba, 3-5 mm. long., unguis solus '75 mm. Filamenta ima basi leviter 

 dilatata, 2*5-3 mm. long., anthers? suborbiculares, fere 1 mm. diam. 

 Ovarium 175 mm. long. ; stylus modo 2 mm. long. ; stigma 

 •8 X 1-2 mm. Fruetus verisimiliter drupaceus hucusque valde crudus, 

 oblongus, 5 mm. lung. 



With its nearly sessile quasi-peltate stigma this might perhaps be 

 regarded as the type of an undescribed genus, particularly as the 

 fruit of Xectaropetalum is unknown ; but the stigma is plainly 

 dimerous, and as for the shortness of the style, the flowers may be 

 heterostylous, which is frequently the case with the Ery thro xy Ions, 

 * Types in i\\i National Herbarium. 



