122 



Canary Islands. North-western Tenerife : Montana de Taco, 

 near Buenavista;, Webh; at 200 m., fl. June, Burchard 260 

 (Zurich Polytechn.) ; Buenavista, on sunny rocks, fl. March, 

 Bourgeau II. 1431. Gomera : San Sebastian, 300 m., fl* March, 



Knntze; in dry places, Piturd 622 (Ziirich Polytechn.); Her- 

 migua, fl. April, Lowe 34. 



The lateral. cymes of E. aculeatum are much contracted, and 

 leafy below, and form a leafy corymbose thyrse in which the 

 flowers are half hidden by the calyx-segments and bracts. The 

 cymes are shorter, fewer-flowered and denser than in the other 

 species- 



EXPLANATION OF PlATE. 



Fig. la, flower of Echium giganteum, 



lb, style-arms. 



Ic, nutlet. 

 Id, leaf. 



Fig. 2a, flower of B. leucophaeum, 



2b, style-arms. 



2c, nutlet. 



Fig. 3a, flower of E. Bond'Spraguei. 



3b, style- arms. 



3c, niltlet (immature). 



Fig. 4a, flower of JE. hrevirame, 



4b, style-arms. 



4c, nutlet. 



Fig. 5a, flower of E, aculeatum. 



5b, style-arms. 

 5c, leaf. 



Flowers, x 3^ ; style-arms, x 6 ; nutlets, x 5 ; leaves, natural size 

 (Id, a small one). 



XIX. -CONTRIBUTIONS TO THE FLORA OF SIAM. 



b ■ 



Additamenta VI. 



"^^ ^ Clematis Kerriana, Drummond et Craib [Ranunculaceae — • 

 Clematideae] ; e grege C. Vitalbae, Linn,, maxime C. gourianae^ 

 Roxb., affinis a qua propter foliola breviora baei vix cordata sub- 

 coriacea nee chartacea constanter pubescentia nnnqnam glabrata 

 €t antberas duplo longiores locnlis omnino parallelis nee basi 

 divaricatis bene distinsrnitnr. 



Herba sarmentosa, late s€andens, ramis snblignosis angulatis 

 alte inaeqnaliter sulcatis purpnrascentibus pilis ad 0*5 mm. 

 . (statu exsiccato) longis cinereo-fulvescentibus crebre vestitis. 

 Folia bipinnata vel (inferiora) pinna ta, superiora longitudine 

 15-20 €m. attingentia, pinnis inter se 5-6 cm. distantibus, rbacbi 

 ramulis omnino simili plus minusve flexuosa; foliola subcoriacea, 

 terna, terminale quam lateralia semper manifeste majus, circiter 

 l'8-5 cm. longum et 1"5 em, latum, ovato-lanceolatum, basi plus 

 Biinusve oblique rotundatum, rarissime obscure subcordatum, 

 mox in apicem fere cuspidatum sensim attenuatum, later- 

 alia acuta, Tix acuminata, omnia subtrinervia, pagina 

 superiore sordide viridia, plus minusve evidenter bulTata, 

 pilis albidis subadpressis laxiuscule conspersa, venis pri- 

 mariis manifeste impressis ceteris inconspicuis, pagina inferiore 



