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12 Some of the plants of this small tree are dead or badly hurt, but one tree in the nursery at the top of Peter’s Hill is uninjured. Malus cerasifera. The earliest of the Asiatic Crabs to bloom is believed to be a hybrid between Malus baccata and M. prunifolia, which has generally been called M. cerasifera. It is one of the largest of these trees, and in good soil and with abundant space it can form a wide-branched, round-topped, shapely tree. The flowers are larger than those of other Asiatic Crabapples, pure white and fragrant, and the fruit is globose, rather dull red, and sometimes an eighth of an inch in diameter. Malus baccata var. mandshurica. Another desirable Crabapple as a flowering tree is the variety mandshunca of M. baccata, a common This has pure white flowers north China, Korean and Japanese plant. only a little smaller than those of M. cerasifera and more fragrant perhaps than those of any other Apple-tree. Last week a good specimen of this Crabapple in the Peter’s Hill Collection was covered with flowers which perfumed the air for a long distance. Another still little known species, Malus micromalus, has been unusually attractive with its small pink flowers. This is a tree with erect branches which form a narrow pyramidal head, and smooth pale bark. Its habit will make it valuable in many gardens. Korean Azaleas. On the upper side of Azalea Path two Korean Azaleas, Rhododendron Schlippenbachii and R. poukhanense have been covered with flowers during the past week. The former has large obovate leaves and white flowers more or less tinged with rose, and from three to three and one half inches in diameter; the corolla is thin and delicate in texture, and when fully exposed to the sun soon fades. The flowers will probably last longer in partial shade. The plants This is a common shrub on the grassy slopes above the cliffs on the Korean coast and other parts of that country, but has remained little known in gardens, appear perfectly hardy in the most exposed position. although its flowers are perhaps the loveliest of all Asiatic Azalea flowers. Rhododendron poukhanense has been covered again, as it has been every spring for several years, with its clear rose-colored fragrant flowers. This is one of the best of the Azaleas introduced by the Arboretum into American gardens, and a hardy decorative plant of first-rate importance. An illustrated guide to the Arboretum containing a map showing the position of the different groups of plants has been published. It will be found useful to persons unfamiliar with the Arboretum. Copies of this guide can be obtained at the Administration Building in the Arboretum, from the Secretary of the Massachusetts Horticultural Society, 300 Massachusetts Avenue, Boston, from The Houghton, Mifflin Company, 4 Park Street, Boston, and at the office of the Harvard Alumni Bulletin, 18 Plympton Street, Cambridge. Price, 30 cents.
NEW SERIES VOL. IV NO. 4 ARNOLD ARBORETUM HARVARD UNIVERSITY BULLETIN OF POPULAR INFORMATION JAMAICA PLAIN, MASS. MAY 16, 1918 Effects of the Severe Winter. The condition of the new Chinese Roses in the Shrub Collection is not as bad as might have been expected and will perhaps interest persons who are beginning to cultivate these plants. The yellow-flowered species, Rosa Hugonis, the single and double-flowered forms of R. xanthina and R. Ecae from Chinese Turkestan are uninjured. The last has been considered rather a tender plant here. The least beautiful, perhaps, of yellow-flowered Roses it has considerable geographical interest. The following are also uninjured: R. davurica, R. sertata, R. Helenae, R. Sweginzowii, R. banksiopsis, R. saturata, R. seUpoda, R. bella, R. omeiensis, and R. multiflora cathayensis. The stems of the following have been killed to the ground or nearly to the ground, but the roots are probably alive: R. corymbulosa, R. Davidii, R. Prattii, R. filipes, R. Moyesii, R. Moyesit rosea, R. Gentiliana, and R. multibracteata. R. Willmottae, which grows well at Rochester, N. Y., but has always been tender in the Arboretum, appears to be dead. Additions to the number of Chinese Maples mentioned in the last Bulletin which have been killed are Acer sinense and A. tetramerum. The latter flowered in the Arboretum a year ago. Other Chinese plants which have been killed are Stachyurus chinensis, Sophora viciifolia, Viburnum ovatifolium, Staphylea holocarpa, Sorbus pallescens, Poliothyrsis sinensis, Fortunearia sinensis, Sycopsis sinensis, Liquidambar formosana monticola, and the Chinese form of Symplocos paniculata. 13 The Sophora has been growing in the Arboretum since 1906, and as it has for several years flowered and produced great crops of seeds here it was believed to be one of the hardiest as it is one of the most beautiful shrubs of recent
Page 1 and 2: NEW SERIES VOL IV NO. 1 ARNOLD ARBO
Page 3 and 4: Davidia, Eucommia, and Ehretia aeum
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Page 7 and 8: Evergreen Barberries. The four Chin
Page 11: cold later in the month destroyed t
Page 15 and 16: always flowered as well as it has t
Page 19 and 20: little value for those who want a p
Page 23 and 24: Midseason Lilacs are in bloom nearl
Page 27 and 28: ville, Tennessee. Sent to France by
Page 31 and 32: with yellow. Another interesting ga
Page 35 and 36: living here for many years. 35 Unde
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Page 39 and 40: than of any other Elm. The well-kno
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Page 43 and 44: part of New England and the middle
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Page 47 and 48: some in the autumn. high with archi
Page 51 and 52: imen in the Arboretum is in the nur
Page 55 and 56: marked by large pale dots and nearl
Page 59 and 60: contains many small seeds imbedded
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of the plants flowered but they are
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NEW SERIES ~ VOL. IV NO. 17 ARNOLD
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or cold, in early spring lost all t
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NEW SERIES VOL IV NO. 18 ARNOLD ARB
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feet in diameter, and has so far es
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. homolepis, INDEX Synonyms are in
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Chinese Pears, 8 Poplars, 9 Rhodode
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77 ° ’ Horsechestnut, European,
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_ 79 Pine, Sugar, 2, 67 Umbrella, 6
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’ 81 Silver Poplars, 34 Sinowilso
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