TENDER PLANTS FOR A WARM CORNER. 



191 



II. Tender Plants in the Open at Cambridge. 

 Among the principal plants growing in warm corners at Cambridge 

 are the following: 



Bromeliaceae : 



Dychia remotiflora flowers freely, producing spikes of orange 



flowers, 

 D. hrevifolia. 

 Greigia sphacelata. 

 Rhodostachys andina. 

 R. littoralis. 



R. pitcairniae folia (Bot. Mag. i. 8087). 

 Puya chilensis (fig. 63). 



All these are covered overhead with glass in winter and flourish 

 without difficulty. The Puya is 6 feet in height and 6 feet through. 

 It bears a considerable amount of cold and appears to grow during 

 mild weather in winter. In autumn it showed signs of branching and 

 by the middle of April had four new crowns fully formed. All are 

 Chilian with the exception of the two Dyckias, which are Brazilian. 



Cactaceae : 



Echinopsis Eyriesii {Bot. Mag. t. 3411). — This is the most satis- 

 factory of the globular Cacti. It has a beautiful white or 

 pale pink flower, with tube 9 inches long — a length greater than 

 the height of the plant. 

 Opuntia arhorescens. 

 0. arhorescens major. 

 0. hicolor. 

 0. hrachyarthra. 



0. cantahrigiensis , 12 feet wide, 6 feet through, 3 feet in height, 

 0. cymochila. 

 0. elata. 

 0. fragilis. 

 0. glaucophylla. 

 0. humilis. 



0. monacantha, 3 feet in height, 6 feet wide, and 2 feet through. 

 0. rohusta, 5' feet in height, 7 feet wide, 4 feet through, with joints 



12 inches and even 14 inches in diameter. 

 0. Rafinesquii. 

 0. xanthostemma. 

 0. vulgaris. 



The best of these for flowering are 0, bicolor, 0. monacantha, and 

 Jerhaps 0. xanthostemma. 0. rohusta is finest in growth, but the 

 most tender. 0. cantahrigiensis is the freest and hardiest of - all. 



Among other succulents are Echeveria Purpusii, Agave Parryi, and 

 A. utahensis. The latter Agave, however, is certainly hardy, Beschor- 

 neria yuccoides (fig. 64), native qI Mexico, may be added. It is allied 



o 2 



