MISCELLANEA AFBTCANA 225 



Stroinbosia Gossweileri, sp. iiov. Arbor gla1)i'a, 25 in. alt. ; 

 ramiiiis uliiiuis o-racilibus ancepitibus bene foliosis ; foliis oblongo- 

 elli[)ticis superne caudato-aouniinatis a])ice oljtnsis basi in petiolum 

 brevem cuneatim angusfeitis pag. utravis pallide nitidis papyraceis 

 costis lateralibus utruique 4-5 superioribus valde inferioribus paullo 

 arcuatis costulis parum aspectabililnis ; /^sc/c?<//^' axillaribus vel ex- 

 axillaribiis panciHoris basi siinamelHferis ; florihus parvulis breviter 

 vabdeipie pedicellatis; alahastris -Ai^^^w^i^ ovoideis ; cali/cis lobis trian- 

 gularibus crassiusculis ; petalis ovato-oblongis obtusis ; filumentis 

 ijuxta medium petalis affixis antheris snbquadratis ; disco valde promi 

 iiente ovarimn obtegente; stylo quam petala plane breviore; omdis 3 

 fructu ovoideo 1-spermo exocarpio in sicco cinereo pustulatoque. 



Mayumbe, common in shady humid woods at Belize ; Gossweiler, 



7007. 



Folia pleraque 12-17x4-5-5 cm., ni sicco griseo-vn-idia, costa 

 media costieque laterales pag. inf. prominentes ; petioli ±1 em. long., 

 superne incrassati. Calyx '4 mm., petala 2 mm., anthera^ -25 mm. 

 long. Ovarium "8 mm.,%tylus '4 nun. long. Fructus 16 X 12 mm. ; 

 semen 12 X 8 mm., in sicco rugulosum. 



Easily distinguished from S. Zenlerl Engl, by the two-edged 

 brauchlets of the larger caudate-acuminate leaves. Though without 

 mature flowers, No. 7648 from the same i)lace is evidently conspecitic. 



Following Engler in his clavis of Htromhosia ( Bot. Jalirb. xliii. 

 165), an arrangement sufficiently good to answer temporarily, the 

 genus as now knowai may be exhibited as follows : — 



Leaves more or less shining. 



Nervules connecting the side-nerves prominent. 



Nervules forming a network aS^. retevenia, sp. n. 



Nervules running straight or almost so. 



Nervules close together ^S*. yrandifolia Hook, f . 



Nervules subdistant. 



Leaves 15-20 em.long. FloNvers 



3 mm., pedicels 3 mm. long... S. ^clieffleri Engl. 

 Leaves 25-30 cm. long. Flow^ers 



5 mm., pedicels 1 mm. long... aS'. majuscula, sp. n. 

 Leaves 10-15 (20) cm. long. 

 Flowers 5-5'5 mm., pedicels 



3-3-5 mm. long >S'. toroeusis, sp. n. 



Nervules connecting the side-nerves obscure. 



Leaves strongly coriaceous 'S'. 3Iannii Engl. 



Leaves papery. 



Branchlets terete. Leaves shortly acu- 

 minate S. ZenJi-eril^w^l. 



Branchlets two-edged. Leaves cau- 

 date-acuminate S. Gossweileri, sp. n. 



Leaves opaque. 



Leaves Hat, mucronate, closely pustular 



beneath S. pustulata 0\iy. 



Leaves flat, obtuse, sHghtly pustular beneath. S. glaucescens Engl. 



Leaves complicate, nSt pustular S. minor Engl. 



Journal of Botany.— Vol. 58. [Septembeb, 1920.] s 



