249 



1. P. brevifolia, Benth. Fl. Hongk. 330. In ravines of Mt. Gough 



and Mt. Victoria, Hongkong. JFl. September. 



2. P. radieans, Wedd. in DC. Prodr. xvi. i. 167. West Eiver, 



Canton. Fl. . 



3. P. Griffithiana, Wedd. ; Hook. f. Fl. Brit. Ind. v. 559. Lien- 



chow Eiver. Fl. December. 



4. P. scabra, Benth. Fl. Hongk. 330. In ravines of Mt. Victoria, 



Mt. Gough and Mt. Parker, Hongkong ; Taimoshan at 

 1500 feet, Hongkong New Territory ; slopes of the 

 Phoenix Mt. and wet banks near Yit-hai, Swatow ; 

 Canton. Fl. April. 



21.— ELATOSTEMA. 



Key to species. 



Fruit smooth ... ... ... ... 1. sessile. 



Fruit tuberculate ... ... ... 2. retrohirta. 



1. E. sessile, J. et G. Forst. ; Hook. f. Fl. Brit. Ind. v. 563, 



Rivulets under rocks, Yit-hai, Swatow. Fl. April. 



2. E. retrohirtum, Dunn, sp. n., E. papilloso, Wedd. affinis, indu- 



mento distincta. 



Herba erecta, 20-40 cm. alta, caule pUis brevibus deflexis 

 dense scabro. Folia alterna, oblique lanceolata, acuminata, 

 basi in altero latere angustata, altero cordata, semiamplexi- 

 caulia, subsessilia, ad 10 cm. longa, crenato-serrata, 

 papyracea, supra ubique, infra praecipue in venis, tenuiter 

 setulosa ; petioli 2 mm. longi. Receptacula florifera 

 axillaria, peltata, margine fimbriata, 5 mm. diametro ; 

 pedunculi 2 mm. longi. Flares plurimi, conferti, laciniis 

 receptacularibus involucrati ; pedicelli O'5-l mm. longi. 

 Sepala 4, linearia, 0"5 mm. longa. Achenium ovale, tuber- 

 culatum, 1 mm. longum. 



Wet shady ground near Yit-hai, Han valley, Dunn's Han 

 Expedition, Herb. Hongk. n. 6288 (unique specimen in 

 Hongk. Herb., drawing in Kew Herb.) Fl. . 



23.— PROORIS, 



1. P. laevigata, Blume ; Hook. 1. c. 575. Taimoshan, Hongkong 

 New Territory. Fl. December — February. 



23.— BOEHMERIA. 



Key to species. 



1. Leaves alternate 1. nivea. 



Leaves opposite ... ■•• ••• 2. 



2. Leaves lanceolate ; spikes short dense 2. densijbra. 

 Leaves ovate ... ... ••• ••■ 3. 



3. Leaves with a long cuspidate point ... 3. grandiflora. 

 Leaves acuminate ... ••• ■•• 4. 



4. Spikes panicled ... ^. polystachyd. 



Spikes simple 5. platyphylla. 



