148 



GARDENERS' CHRONICLE 



Botanical Name, 

 .liiiorpha caiicsccns ' 

 Baccliaris halimifolia 

 Benzoin acstivalc 

 Ccrcis canadensis alba 



Ccanot litis amcricanus 

 Ccphalanthns occidcntalis 

 Corniis altcrnifolia 



Cyrilla raeeniiflora 

 Hypericum prolificnm 

 Hypericum densiflorum 

 Ilex decidua 

 Ilex verticillafa 

 Ptelia trifoliata 

 Rhamnus caroliniana 



Common Name. Height. 



Lead Plant 2 to 3 ft. 



Groundsel Tree 6 ft. 



S'pice Bush 8 to 10 ft. 



White Judas Tree 



New Jersey Tea 



Butt on bush 



Dog'wood 



Leatherwood 



St. John's' Wort 



12 ft. 

 3 ft. 



5 ft. 

 8 ft. 

 8 ft. 



3 to 6 ft. 

 3 to 6 ft. 

 Hollv (Deciduous) 12 ft. 



6 ft. 

 Hop Tree 8 to 10 ft. 

 Indian Cherry 8 to 10 ft. 



Time of 

 Color. Bloom. 



Blue June 



Sept. 

 April 

 April 

 Tune 

 July 

 June 



Yellow 



White 



White 



White 



Yellow 



White 



July 

 Yellow Tune 



Remarks. 

 Profuse flowers. Dense growth. 

 White fruit. Dark green foliage. 

 Aromatic foliage. 

 Rare. Desirable. 

 Spreading. Profuse bloomer. 



Yen,' distinct, with branches in layers. 

 Lustrous foliage. Numerous flowers. 

 Lustrous foliage. Numerous flowers'. 

 Lustrous foliage. Numerous flowers. 

 Berries ver\' attractive in Winter. 

 Red fruit, very attractive for mass. 



Khns canadensis Fragrant Sumac 3 to 4 ft. 



Stapliylea trifolia Bladdernut 6 to 7 ft. 



Symphoricarpos occidentalis Wolfherry 2 to 6 ft. 



Zanthoxylmn Clava-Hercnlcs Prickly Ash 15 ft. 

 — lonrnal of International Garden Club. 



Yellow 

 White 



■ Vpril 

 May 



Lustrous foliage, 



ries. 

 Banks. 



Attractive fruit. 

 Drooping habit. 



attractive l)lack ber- 



GROWING ORCHIDS FROM SEED 



THE restriction recently placed by the Federal Horti- 

 cultural Board on the importation of orchids has 

 given the orchid grower an extremely difficult 

 problem to solve. Orchid raising is in its infancy in 

 this country, the American hybrids possibly aggregating 

 not more than 1 per cent of those tabulated in the Urchid 

 Stud Book. In European countries hybrids have been 

 raised for years in the various private collections, particu- 

 larly in England and Belgium. During the war the finest 

 collections of the latter, however, were lost. 



In recent years the commercial florist has sold the 

 Cattlcya orchid at the same price as roses and com- 

 moner flowers, and considerable experience has been re- 

 quired to place the coveted flower within this reach. It 

 is generally conceded that the Cattleyas of the labiata 

 type deteriorate under artificial cultivation, and periodical 

 importations from the tropics, by the thousands of cases, 

 have been necessary to maintain the floral supply. If the 

 future supply will all have to be raised from the almost 

 microscopic seeds the minimum period of five years will 

 be necessary, and the orchid flower will again be the 

 choice rarity of the millionaire. The germination of the 

 seeds depends upon the action of a syml:)iotic mycorrhizal 

 root fungus, without which failure is certain. During the 

 entire period from pollination to the flowering stage the 

 plants demand constant attention. Eight to ten montlis is 

 necessary from the pollination of the flower to the ripen- 

 ing of the seed pod and at least five years from pollination 

 to production of flowers. Thus, while the orchid hybrid- 

 ist is waiting for his seeds' to develop other hybridists 

 experimenting with Sweet Peas, Carnations, Water 

 Lilies, etc., have raised their plants to the flowering stage. 



Insects upon imported orchid plants, according to our 

 observations covering a number of years, are extremely 

 rare. In fact, during the last fourteen years, only two 

 shipments were infected with borers. These are com- 

 monly referred to as the orchid fly and the Dendrobium 

 beetle, and their eradication, accordin.g to our experi- 

 ments, was a simple matter. In the early stage the pres- 

 ence of the larvae is indicated by an abnormal swelling 

 of the young growth from strap-shaped to pear-shaped. 



Unless the government order is rescinded the florist 

 will have to turn from the showy epiphytic types to the 

 terrestrial or semi-terrestrial lady's slippers. Raising 

 even this variety from seed would not be profitable. The 



present stock of orchids in this country may be rapidly 

 increased, however, by the annual division of the vege- 

 tative growths which readily adapt themselves to this 

 medium of propagation. In the Western States it is 

 essential to divide the parent plants periodically to in- 

 crease flower production. 



A new hybrid lady's slipper raised in the Garden 

 orchid houses during the last five years has just pro- 

 duced its first flower. This is the first slipper orchid 



raised at the Garden to reach the flowering stage and 

 will bear the name of "D. S. Brown" in honor of the 

 man who brought the Garden orchid collection up to 

 the present standard. The parents of the hybrid were 

 Papltiopediliiin barhatum Crossii, a native of the Malay 

 region, and the hybrid F. Harrisianuin superbum. Both 

 were dark-flowering types, but the color of the offspring 

 is greenish yellow with a prominent white dorsal sepal, 

 the upper portion being flushed with bright purple. — 

 Missouri Botanical Garden Bulletin. 



