ij:GrMixos.E. 77 



DerHs Loce. 



Derris alborubra Hemsl. in Bot. Mag. t. 8003. 

 Hab. Hainan, leg. Z. IvATSraADA, 1910. 



Derris hainanensis Hayata sp. nov. Eanmli teretes mnlti-striati, 

 glabii. Folia impaii-pinnata, in ambitu oblonga S cm. lata, 13-l.j-foliolata, 

 foliolis membianaceis oboA-ato-oblongis 4 cm. longis 18 mm. latis apice rotun- 

 datis breve cnspidatis, (cusxjidibus 1-2 mm. longis ad summum obscuie 

 mucronatis), basi obtusis margine integiis utraque glabris, costis utiaque 

 pagine leviter elevatis, venis lateralibus tennibus distincto visis, facie sul> 

 lente minuto denseque tuberculatis vel reticnlatis, petiolidis .5 mm. longis, 

 petiolis communibus 7 cm. longis, stipnlis oblongo-tiiangularibus apice 

 obtusis basi ± infra insertionem productis truncatis extus tomentosis intus 

 glabris crassiusculis. Flores racemosi vel iJanicuIati, racemis axillaribns vel 

 solitariis 10 cm. longis laxifloratis, pedunculis 5 cm. longis, j)edicellis 1-2 cm. 

 longis, bracteis miuutis tiiangularibns globosis apice acutis basi rotundatis 

 extus hirsutis margine ciliolatis intus glabris crassiusculis ; basi pedicelli 

 bracteis 1, apice pedicelli biacteis 2 dispositis. Calyx campanulato-cnpuli- 

 formis, 4mm. longus 7 mm. latus subglaber prope marginem tenuiter pubes- 

 cens, ore snbtrmioatus, obscm-e brevissime .5-dentatus. Vexillum sub- 

 orbiculare, Ijcm. longum, apice lobato-emarginatum, basi cordatnra breve 

 rmguiculatum, ungue 3 mm. longo cnneifoimi basi 1 mm. lato apice 2i mm. 

 lato basi lamince squamis 2 dispositis, squamis triangulari-cuspidi- 

 formibus, 2 nnn. longis ; alse l^ cm. longse, laminis oblique oblongis 11 mm. 

 longis 4-.5 mm. latis apice obtusis basi latere superiore auriculatis, unguibus 

 5 mm. longis linearibits ; carinse cnltriformes alis sequilongse l^ cm. longae, 

 laminis oblique oblongis 10 mm. longis infra medium gibboso-inflatis cnm 

 alis conflueutibus, unguibus linearibus 6 mm. longis. Ovarium sessile 

 lineare 11 mra. longum 1 mm. latum complanatum lureutnm apice giadatim 

 ad stylum 1-2 mm. longimr abeuns, stigmate terminali glolxjso. 



Hab. Hainan, leg. K. Katsumada, 1911. 



Near D. oblmga, but differe frora it by the quite glalirous calyx and leaves. 



