and Catawbiense Album, but distinct in habit, with 
broader leaves and larger flowers. 
RHODODENDRON SPECIES 
R. HOULSTONII. 12 feet, Szechuan, pink. Closely 
related to R. Fortunei and discolor, but rather less 
hardy so far as observed. 
MACULIFERUM 30 feet, Szechuan, white 
or pale pink, with blotch deep purple, almost black. 
Probably not quite hardy. 
REX. 30 feet, Szechuan, rose with darker blotch. 
Foliage very large, impressive. Not quite hardy. 
WILLIAMSIANUM ★★★★ 5 feet, Szechuan, 
pink flowers nodding. One of the half dozen most 
beautiful of all Rhododendron species. Hardy, but 
not bud-hardy on Cape Cod. 
^ Rock Garden Species ^ 
HIPPOPHAEOIDES *** 3 feet, West China, 
lavender to rose. Hardiest of the Lapponicums, it 
requires nearly bog conditions. 
KELETICUM 6 inches, Tibet, purple blos¬ 
soms standing solitary or in pairs above the plant. 
Probably nearly hardy. 
