88 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
also numerous plants of the Colocynth (Citnillus Colocynthis). 
The fruits, like small melons, are plentifully distributed in winter 
over the surface of the sand. The pulp in the interior of these 
fruits is very bitter, and is the well-known medicine colocynth. 
It forms an important article of export from Jaffa and other 
places in the Levant. 
Among the special plants of Grand Canary not known in the 
other islands Hypericum coadunatum, with bright yellow 
flowers and broad, clasping leaves, is found sparingly on the 
banks of streams. Sempervivuin ccespitosum, a somewhat small 
tufted species with yellow flowers, is found in rocky woods on the 
Pozo de la Plata. The peculiar Mona7ithes purptirascens (of 
which there is no specimen in the Kew Herbarium) is said to 
grow in the valley of Tenteniguada, below Los Saucillos. 
M. tilophilum is found in Barranco de los Tilos. Cytisus 
congesttis, with short, densely packed leaves and abundant 
white flowers, is found on the Cumbres. C. rosmarinifolins 
is a singular species with stiff leaves like Rosemary. It is said 
to be found at El Risco Blanco in Barranco de Tirajana. Lotus 
spartioides is a low, spreading plant with yellow flowers growing 
at "La Calderita de la Cumbre." Ipomcea Freauxii is given as 
a Canary plant growing in the lowlands. This is not in the Kew 
Herbarium. Ceropegia fusca is described by Bolle as growing in 
Barranco Seco, near Las Palmas, and also at Arucas. Of this 
too there is no specimen in the Kew Herbarium. The round, 
fleshy-leaved C. dichotoina, found on rocks and chffs at Buena- 
vista in Teneriffe, is well known, and is growing at Kew. A very 
delicate Canary Campanula (Laurentia canariensis), scarcely 
three inches high, grows at a spring in Barranco de la Virgen. 
This is of no interest as a garden plant. The other Campanula 
(Canarina campanulata) is well known as a very attractive plant. 
A very interesting species, confined to Grand Canary, is 
Echium callithyrsum, from the Cumbre de Tenteniguada. It is 
cultivated in this country. It has often been flowered at Kew, 
and there are specimens in the herbarium from Mr. Harper- 
Crewe's garden in 1881. E. oiiosvLcefoliiiiu, once at Kew, is a 
smaller plant from the Pozo de la Plata. Siderltis (Leucophae) 
discolor, with white felted leaves, is common near Los Tilos. 
Prcnanthcs 2JGndtLla, closely allied to the Sow-thistles, with a 
striking habit, is found in sheltered places on rocks in the moun- 
