256 



Garden and Forest. 



[Number 223. 



but are inclined to be rather one-sided in habit, and from data at 

 hand can liardly be expected to attain a greater lieight than 

 from ten to fifteen feet. Tliey can be more readily grown from 

 cuttings tlian many others of the same family, but such plants 

 are found to grow so slowly that it is better to propagate by 

 grafting in the usual way. 



While none of the species already mentioned attain large 

 size, the double-flowered form of the European Bird Cherry 

 (P. Avium) becomes a stately tree, and some old specimens 

 in this vicinity, now thirty or forty feet in height, have been 

 most beautiful objects with their heavy loads of snowy white 

 double flowers on long stalks in clusters of several from a 

 bud. The period of best bloom is usually aliout the middle of 

 May here, the flowers being simultaneous with those of the 

 white-ffowering Japanese Cherry just mentioned. No double- 

 flowering Cherry surpasses it in effective beauty of its bloom, 

 and since it becomes a large tree it requires room for growth 

 and full development. This tree is to be obtained as P. (or 

 Cerasus) Avium alba plena or P. Avium multiplex. Instead 

 of P. Avium we occasionally find it classed as P. Cerasus, which 

 is a separate and distinct species, and from which a double 

 form has also been derived. This is sold by nurserymen as 

 P. Cerasus ranunculitlora, or flore pleno, or Cerasus Caproni- 

 ana ranunculitlora or multiplex. In the confusion of names 

 it is also occasionally found under P. Avium, from which it 

 may be distinguished by its perfectly glabrous, shining, almost 

 sticky leaves, which appear much later than in the other va- 

 riety. Its blossoms, also, do not begin to develop until about 

 two weeks after the first flowers of the double-flowering P. 

 Avium are seen, and it is the latest of the strikingly orna- 

 mental Cherries to blossom. The flowers are quite as double 

 as those of the other species, but are less graceful and have 

 a greenish centre, and the tree does not attain anything like 

 such a large size. 



Arnold Arboretum . J • G. Jack. 



New or Little-known Plants. 



Asarum Crux-Andrse. 



ASARUM is a small east temperate North American and 

 Antillean genus of a few subfruticose plants with 

 black dotted leaves and solitary yellow flowers, of the Hy- 

 pericum family, principally distinguished from the true 

 Hypericums by their four, instead of five, unequal sepals, 

 their numerous distinct, not clustered, stamens, and ovoid 

 capsules. The species are little known in gardens, although 

 Asarum Crux-Andras, of which a figure appears on page 257 

 of this issue, in spite of the fact that it is rather delicate in 

 cultivation, is a good subject for the rock-garden or the 

 margins of small shrubberies, as the habit of this little 

 plant, which, under favorable conditions, spreads into 

 broad mats of bright foliage studded during several weeks 

 in summer with clear yellow flowers, is well suited for 

 such purposes. The much-branched stems rarely rise 

 more than four or five inches above the ground, and are 

 thickly clothed with small narrow obovate^oblong leaves, 

 furnished with two glands at their bases. The shape of 

 the flowers is interesting, and to their peculiar form is due 

 the name by which this plant is known, St. Andrew's 

 Cross. Of the four sepals the two outer are broad, flat and 

 ovate, and the two inner are minute and almost hidden by 

 the petals, which are linear-oblong, acute, arranged in the 

 form of an X, or St. Andrew's Cross. 



Asarum Crux-Andrs is not rare on the island of Nantucket ; 

 it is rather a common plant in the New Jersey Pine-barrens, 

 and ranges to Virginia, southern Illinois, eastern Nebraska 

 and eastern Texas. It has been an inhabitant of the Arnold 

 Arboretum for several years, but it is not very hardy here, 

 and demands dry, rather sandy, well-drained soil and 

 careful protection in winter. 



Of the other species of the genus, none of which ap- 

 pear to have been introduced into gardens, A. pumilum 

 inhabits the sandy Pine-barrens of Georgia and Florida ; 

 A. hypericoides, a taller plant with erect stems some- 

 times two feet in height, ranges from our south Atlantic 

 and Gulf states to the West Indies ; A. stans, with large 

 broad petals and shovi^y flowers, is distributed from New 

 Jersey along the coast of Texas, and is a handsome plant, 

 which may be expected to make a useful addition to the 



list of small garden-shrubs ; and A. amplexicaule, an 

 erect-stemmed plant with large clasping leaves and bright 

 yellow flowers an inch in diameter, is a native of the south 

 Atlantic states and of Cuba. C. S. S. 



New Orchids. 



Dendrobium X RoLrE.E, Sander. — A charming hybrid, 

 raised in the establishment of IMessrs. F. Sander & Co., of 

 St. Albans, from D. primulinum crossed with the pollen of 

 D. nobile. It has large delicate-colored flowers, in which 

 the influence of the pollen parent decidedly preponderates. 

 — Gardeners' Chronicle, A-prW 23d, p. 522. 



Vanda Arbuthnotiana, Kranzlin. — A species allied to V. 

 Roxburghii, with golden-yellow flowers transversely striped 

 with purple. It is a native of the Malabar coast, and was 

 introduced by Messrs. F. Sander & Co., of St. Albans. — 

 Gardeners' Chronicle, April 23d, p. 522. 



Cattleya Alexandra, L. Lind. & Rolfe. — A very remarka- 

 ble species, with long peduncles fifteen to eighteen inches 

 long, and bearing six to ten flowers at the apex. These have 

 the general shape of those of C. Leopoldii, the sepals and 

 petals being of a coppery brown tint, shaded with violet 

 on the undulate margins, and the lip violet-rose. — Garden- 

 ers' Chronicle, April 23 d, p. 522. 



Cypripedium exul, O'Brien. — A Siamese species, intro- 

 duced in 1 89 1 by two or three different firms, which has 

 recently flowered for the first time in Europe. It is the C. 

 insigne, var. exul, of Ridley, but is specifically distinct, and 

 in several respects is more nearly allied to C. Druryi. It 

 received an award of merit from the Royal Horticultural 

 Society on April 19th last, when exhibited byR. I. Measures, 

 Esq., of Cambervsrell. — Gardeners' Chronicle, April 23d, pp. 

 522, 523, fig. 77; also p. 535. 



Cattleya X Burberryana, Sander. — A new hybrid raised 

 in the establishment of Messrs. F. Sander & Co., of St. 

 Albans, who received a first-class certificate for it from the 

 Royal Horticultural Society on April 19th last. Its parent- 

 age is stated to be "C. imbricata x 9 [? X intricata] 

 superbacf." The flowers are said to resemble the latter 

 in shape, the sepals and petals white tinged with pink, and 

 the front lobe of the lip rich crimson. — Gardeners' Chron- 

 icle, April 23d, p. 535. 



Cattleya x Philo, Veitch. — A hybrid raised in the estab- 

 lishment of Messrs. James Veitch & Sons, of Chelsea, from 

 C. mossias crossed with the pollen of the rare C. iricolor. 

 The sepals and petals are blush-white, with a faint yellow 

 tinge, the front of the lip crimson with a blush-white 

 margin, the middle of the lip )'elIow, and the base crimson 

 with whitish veining. It received an award of merit from 

 the Royal Horticultural Society on April 19th last. — Gar- 

 deners' Chronicle, April 23d, p. 535. 



Cypripedium x Huybrechtsianum, Vervaet. — A name ap- 

 plied to a hybrid raised betvi'een C. hirsutissimum and C. 

 Spicerianum, which particular cross has already received 

 no less than three distinctive names. Chronologically ar- 

 ranged these are C. X Medeia, C. x Ceres and C. x Van- 

 molianum. — Gardeners' Chro?iicle, April 30th, p. 554. 

 Kew. Ji- A. Rolfe. 



Plant Notes. 

 Some Recent Portraits. 



N the May issue of The Botanical Magazine are figured 

 _ Lilium Lowii (t. 7232), another of the fine Lilies which 

 recent explorations of Upper Burmah have brought to light. 

 Its nearest allies are Lilium Nepalense, recently figured in 

 the Magasitie, and Lilium Bakerianum. The plant is de- 

 scribed as producing a glabrous stiffly erect stem four feet 

 long from a globose bulb two inches in diameter with 

 small lanceolate scales. The leaves are numerous, scat- 

 tered, sessile, linear, spreading, and two or three inches 

 long. The flowers, which are borne on long peduncles 



