390 THE CULTIVATED EVERGREENS 



Heath, Spanish. See Erica lusitanica. 

 Heather. See Calluna vulgaris. 

 Heather, Bell. See Erica Tetralix. 

 Heather, Southern. See Ceratiola ericoides. 

 2B Hedera canariensis (H. Helix var. canariensis. H. azorica, Hort.). Vine 



climbing by root-like holdfasts. Canary Isls., Maderia, N. Afr. Cult. South. 

 2B Hedera colchica (H. Rsegneriana, Hort.). Vine climbing by root-like hold- 



fasts.. Asia Minor, Caucasus, Persia. Cult. South. 

 IBP Hedera Helix. English Ivy. Vine for brick and stone climbing by root-like 

 holdfasts. Eu., Canaries, N. Afr., Asia. Always safer with winter shade 

 and best when used as ground-cover in the North. Cult. South and N. W. 

 coast. 

 Heeria rosea. See Heterocentron roseum. 

 IB Helianthemum Chamsecistus (H. vulgare). Rock-Rose. Low procumbent 



subshrub. Eu., W. Asia, N. Afr. 

 2B Helianthemum ocymoides (H. algarvense. Cistus algarvense). Nearly erect 



twiggy shrub to 2-3 ft. Spain and Portugal. 

 Hemlock. See Tsuga. 

 2BT Heterocentron roseum (Heeria rosea). Shrub to 1 ft. Mex. and Cent. 



Amer. 

 2B Heteromeles arbutifolia (Photinia arbutifolia). Toyon. Christmas-Berry. 



Shrub or tree to 20 ft. Calif., also cult. South. 

 Heteromeles glabra. See Photinia glabra. 

 Heteromeles serrulata. See Photinia serrulata. 

 2BT Hibiscus heterophyllus. Tall shrub. Australia. Cult. South. 

 2BT Hibiscus Rosa-sinensis. Chinese Hibiscus. Tall shrub. Australia. Cult. 



South. 

 IBS Hippophae rhamnoides. Sea Buckthorn. Large shrub or small tree from W. 

 and cent. Asia, W. China or N. W. Himalayas. Remains low and shrubby 

 in seashore planting. 

 Holly, American. See Ilex opaca. 

 Holly, English. See Ilex Aquifolium. 

 Holly, Japanese. See Ilex crenata. 

 Honeysuckle, Fragrant. See Lonicera fragrantissima. 

 Honeysuckle, Halls. See Lonicera japonica var. Halliana. 

 Honeysuckle, Japanese. See Lonicera japonica. 

 Honeysuckle, Trumpet. See Lonicera sempervirens. 

 Horse-Sugar. See Symplocos tinctoria. 

 2BT Hoya carnosa (H. Motoskei). Wax-Plant. Twining vine to 5-8 ft. S. China, 

 Australia. Cult. Calif. 

 Huckleberry, Box. See Gaylussacia brachycera. 

 2BT Hymenosporum flavum. Pyramidal shrub or tree to 50 ft. Australia. Used 



on streets in Calif. 

 IBPRS Hypericum calycinum. Rose-of -Sharon. Aarons Beard. Spreads rapidly. 



Subshrub to 1 ft. Cult. South and W. coast to Wash. 

 2BS Hypericum hircinum. Compact subshrub to 2-3 ft. Medit. region. Cult. 



South and Calif. 

 2BS Hj'pericum Moserianum. Gold-Flower. Erect subshrub to 2 ft. A hybrid 

 by Moser of France between H. patulum and H. calycinum. Cult. South 

 and Calif. 

 2BS Hypericum patulum var. Henryi. Spreading shrub to lJ^-3 ft. China. Cult. 

 South and Calif. 



