Tas. 8591. 
CERATOSTIGMA WiLLmorrranum, 
China. 7 
PLUMBAGINACEAE, ‘Tribe PLUMBAGEAE. 
CERATOSTIGMA, Bunge; Benth. et Hook. f. Gen. Plant. vol. ii. p. 628; Prain in 
Journ, Bot. vol. xliv. (1906), p. 4. 
i 
Ceratostigma Willmottianum, Stapf; species nova C. plumbaginoidi, Bunge 
et C. asperrimo, Stapf ex Prain, similis, a priore imprimis foliis minoribus 
utrinque pilosis, corolla pallidiore, antherarum apicalibus tantum brevissime 
e tubo exsertis, stigmatibus antheras longe superantibus et habitu, ab 
altero forma textura et indumento tenuiore foliorum, ab ambobus perulis 
coriaceis lanceolatis distinctum. 
Frutex multiramosa, 1-1°5 m. alta, caulibus angulatis strigilloso-hirtulis saepe 
purpurascentibus. Innovationes basi perulis lanceolatis vel lanceo!ato- 
subulatis indutae. Folia sessilia, oblanceolata vel elliptico-oblanceolata, 
acuta vel subacuta, setoso-mucronata, basin versus cuneatim attenuata, 
3-5 em. longa, 1°3-2 cm. lata, viridia, supra sparse, infra copiosius et 
asperius hirtella, in margine rigide ciliata, sparse et minutissime glandu- 
loso-furfuracea. Capitula terminalia, saepe minoribus nonnullis ex 
foliorum summorum axillis ortis additis; bracteae lanceolatae, acuminatae, 
carinatae, mucronatae, rigide ciliatae, exteriores 14-10 mm. longae. 
Calyx tubulosus, 5-dentatus, tubo circiter 11 mm. longo viridi albo-5- 
striato, dentibus subulatis purpurascentibus 3 mm. longis. Corollae tubo 
roseo circiter 18 mm. longo, limbo amoene coeruleo, lobis truncato- 
obovatis mucronulatis 8 mm. longis superne 7 mm. latis. Antherac 
purpurascentes, vix 2 mm. longae, apicibus e tubo brevissime exsertis. 
Styli albidi, 2 mm. longi, toti exserti.—O. Srapr. 
The singular distribution of the species of the Plumba- 
ginaceous genus Ceratostigma has been the subject of 
comment for more than sixty years. The genus was 
based originally on a species from Northern China de- 
scribed by Bunge in 1834 which has long been a favourite 
plant in English conservatories and, with some litile 
proteciion during severe weather in winter, also in col- 
lections out of doors. An excellent figure of that species, 
C. plumbaginoides, Bunge, which is often known in gardens 
by the name Plumbayo Larpentae, Lindl., bestowed on the 
plant in 1847 when it was first introduced to England, 
has been provided at t. 4487 of this work. The only 
other species of the genus which was known when that 
figure was published is an Abyssinian one, treated by 
DecemBeER, 1914. 
