LEGUM1NOS.E. < < 



Derris LOUR. 



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

 HAB. Hainan, leg. Z. KATSUMADA, 1910. 



Derris hainanensis HAY ATA sp. nov. llamuli teretes multi-striati, 

 glabri. Folia impari-pinnata, in ambitu oblonga 8 cm. lata, 13-15-foliolata, 

 foliolis membranaceis obovato-oblougis 4 cm. longis 18 mm. latis apico rotun- 

 datis breve cuspidatis, (cuspidibus 1-2 mm. longis ad sumraum obscure 

 mncronatis), basi obtusis margine integris utraque glabris, costis utraque 

 pagine leviter elevatis, venis lateralibus tenuibus distincte visis, facie sub 

 lento minute denseque tuberculatis vel reticulatis, petiolulis 5 mm. longis, 

 petiolis communibus 7 cm. lougis, stipulis oblongo-triangularibus apice 

 obtusis basi infra insertionem productis truncatis extus tomentosis iiitus 

 glabris crassiusculis. Flores racemosi vel paniculati, racemis axillaribus vel 

 solitariis 10 cm. longis laxifloratis, pedunculis 5 cm. longis, pedicellis 1-2 cm. 

 longis, bracteis minutis iriangularibus globosis apice acutis basi rotundatis 

 extus hirsutis margine ciliolatis intus glabris crassiusculis ; basi pedicelli 

 bracteis 1, apice pedicelli bracteis 2 dispositis. Calyx campanulato-cupuli- 

 formis, 4 mm. 1< .uigus 7 mm. latus subglaber prope marginem tenuiter pubes- 

 cens, ore subtruncatus, obscure brevissime 5-dentatus. Vexillum sub- 

 orbiculare, Ijcm. longimi, apice lobato-emarginatum, basi cordatum breve 

 unguiculatum, ungue 3 mm. longo cuneiformi basi 1 mm. lato apico 2^ mm. 

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

 formibus, 2 mm. longis ; alne li cm. longa>, laminis oblique oblongis 11 mm. 

 lougis 4-5 mm. latis apice obtusis basi latere superiore auriculatis, uuguibus 

 5 mm. longis linearibus ; carinse cultriformes alis sequilong?e li cm. louga?, 

 laminis oblique olilongis 10 mm. longis infra medium gibboso-inflatis cum 

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

 lineare 11 mm. longuru 1 mm. latum complanatum hirsutum apice gradatim 

 ad stylum 1-2 mm. longum abeuns, stigmate terminal] globoso. 



HAB. Hainan, leg. K. KATSUMADA, 1911. 



Near D. oblonga, but differs from it by the quite glabrous calyx and leaves. 



