176 



paullo protrusi. Sepala 5, oblongo-linearia, 6 mm. longa. 

 Corolla flava, rotata, 2-2'5 cm. diam., 5-lobata ; lobi 

 oblougi, apice fimbriati, 1-2 cm. longi, tubo bis longiores, 

 basi cristati, coronam pulchram fimbriatam > mm. longam 

 supra OS formantes. Stamina 5, in tubo medio inserta et 

 eum paullo excedentia ; antherae oblongae, sagittatae. 

 Stigma in lameUas duas fimbriatas divisum. 

 Kwaisin, Hoifung, Native Collector, Hongk. Herb. n. 1651. 

 Fl. yellow, September. 



HYDEOPHYLLACEAE. 



1.— HYDROLEA. 



1. H. zeylanica, Vahl; Clarke 1. c. 133. Near Canton ; North 

 River. Fl. blue, November. 



BORAGINACEAE. 

 Key to genera. 



1. Large tree ... ... ... ... 2. 



Herb or small shrub ... ... ... 3. 



2. Style twice bipartite ... 1. Cordia. 



Style once divided 2. Ehretia. 



3. Ovary entire or four pointed ...- ... 4. 

 Ovary 4-partite ... ... ... 5. 



4. Stem climbing ... ... ... ... 3. Tournefortia. 



Stem erect ... ... ... ... 4. Heliotropium. 



5. Nutlets quite smooth 8. Lithospermum. 



Nutlets rough or toothed ... ... 6. 



6. Nutlets with inflexed marginal teeth ... 5. Thyrocarpus. 

 Nutlets entire a,t margins ... ... 7. 



7. Nutlets glandular ... ... ... 7. Bothriospermum. 



Nutlets glochidiate ... ... ... 6. Cynoglossum. 



1.— CORDIA. 



1. C. Myxa, Linn. ; Clarke in Hook. f. Fl. Brit. Ind. iv. 136. 

 Near village north of INlaonshan, Hongkong New Terri- 

 tory. Fl. white, June. 



2.— EHRETIA. 



Key to species. 



1. Leaves quite entire ... ... ... 1. longijiora. 



Leaves toothed... ... .. ... 2. 



2. Leaves small, obovate, with a few coarse 



teeth at top... ... ... ... 2. hu.vifoUu. 



Leaves lanceolate, crenate throughout 3. acuminata. 



1. E. longiflora, Champ. ; Benth. Fl. Hongk. 234. Victoria Peak, 

 Happy Valley and Taitam, Hongkong ; [vanghau, Hong- 

 kong New Territory ; Pak-kwa-ngau, village, near Phoenix 

 jNlt., Swatow. Fl. white, March. 



