432 



CYPRIPEDIUM 



CYPRIPEDIUM 



The Concolor section requires a warm, moist location 

 with free access to the air. The species should be grown 

 in rather small pots, with at least half the space devoted 

 to drainage of broken charcoal or other free material. 

 The potting compost should consist of equal parts 

 chopped sod, peat-fiber and living sphagnum. Lime- 

 stone is often recommended as essential in the culture 

 of this section, but, the conditions being equal, I have 

 never noticed any beneficial results from it (Orchid 

 Review 4: 45; Veitch's Manual 2: 19-20). 



The deciduous tropical species, of which C.Irapeanum, 

 'C.Thibeticum and Selenipedium palmifolium afford good 



644. Selenipedium Schlimii. 



The picture shows on the left a section of the labellum; on the 

 right, a section of the ovary. 



examples, require similar treatment to the evergreen 

 kinds. They have a long dormant period during which 

 they should be rested in a temperature of 50 F., with 

 sufficient water to keep the compost moist until growth 

 starts, when they must be returned to their proper de- 

 partment and enjoy a liberal supply of water until after 

 the flowering season, when they must be ripened off 

 and the water supply gradually withheld. 



The hardy species do better planted out in the open 

 ground or in rockeries, where they should be so situated 

 as to obtain good drainage and shade. The soil must be 

 free and porous and consist of three parts chopped turf 

 and equal parts of peat and sphagnum. They require a 

 liberal amount of water and frequent syringing over the 

 foliage while growing, but the supply should be grad- 

 ually reduced after the flowering period until only 

 enough water is given to keep the soil moist. During 

 the winter the plants should be protected with leaves or 

 pine boughs. C. spectabile and C. pubescens grow well 

 under pot culture. A 7-10-inch pot will hold eight or a 

 dozen crowns, which should be planted 2 inches below 

 the surface. Two inches of drainage are sufficient. The 

 pots should be filled with soil (firmly pressed in) to % 

 inch below the rim. After a thorough watering they 

 should be stored in a coldframe and protected with 

 leaves and boughs. About the middle of February they 

 may be removed to a coolhouse, where they should re- 

 main for a week, and then be placed in the cool end of 

 the Cypripedium house, where they should be watered 

 sparingly until growth action starts. These plants make 

 strong growths under this treatment, and the flowers are 

 a decided improvement over those produced normally 

 outside. 



All Cypripediums are propagated by division. 



ROBERT M. GREY. 



Index to species described in the main list: Abbotia- 

 num, 5; acaule, 40; albens, 25; Amesianum, 25; Apple- 

 tonianum, 16; Argus, 6; arietinum, 43; Arnoldianum, 

 25; atropurpureum, 5; aureum,25; auriculum, 5; bar- 

 batum, 1; bellatulum, 20; biflorum, 1; Boxalli, 28; 



Breevisianum, 25; Brownii, 25 ; Bullenianum, 15 ; Cal- 

 ceolus, 48; candidum, 46; Californicum, 52; callosum, 

 4; caudatum is a Selenipedium; Chamberlainianum, 38 ; 

 Chantinii, 25; Charlesworthii, 24; ciliolare, 7; caerules- 

 cens, 1 ; coloratum, 5 ; concolor, 17 ; corrugatum, 25 ; 

 Coulsonianum, 25; Cowperianum, 25; Crossianum, 1; 

 Curtisii, 9; Cuttingianum, 25; Dayanum, 12; Dominia- 

 num, 25 ; Dormanianum, 25 ; Druryi, 27 ; elegans, 41 ; 

 Elliottianum, 37; Ernestii,25; Exul, 26; Eyermanianum, 

 25; Fairieanum, 21; Foerstermanni, 25; fuscatum, 25; 

 giganteum, 1, 5; Gilmoreianum, 25; glanduliferum, 35; 

 Godefroyse, 19; gracile, 1, 25; grandiflorum, 1; grande, 

 5; guttatum, 25; Haynaldianum, 31; Hendersonianum, 

 1 ; Himalaicum, 44 ; hirsutissinmm, 22 ; Hookerse, 15 ; 

 Horsmanianum, 25; Hyeanum, 5; illustre, 25; insigne, 

 25; Irapeanum, 54; Javanicum, 13; Japonicum, 42; Kim- 

 ballianum, 25, 35, 37; laevigatum, 34; Lawrenceanum, 5; 

 leucochilum,19; Lindeni,5; longisepalum,25; Lowei, 30; 

 Lutwycheanum, 25 ; Macfarlanei, 25 ; macranthum, 51 ; 

 maculatum, 25; magnificum, 5; majus, 1; Mandevillea- 

 num, 25; marmoratum, 5; Mastersianum, 14 ; Maulei, 

 25; maximum, 25; montanum, 53; Mooreanum, 25; mo- 

 saicum, 1; Moulmeinense, 25; nanum, 1; Neo-Guineense, 

 35; nigritum, 2; nigrum, 1, 5; Nilssonii, 25; nitens, 25; 

 niveum, 18 ; nobile, 1 ; O'Brienianum, 1; Parishii, 32 ; 

 parviflorum, 49 ; Petri, 12 ; Philippense, 34 ; pictum, 

 1, 5; Pitcherianum, 5, 6; pleioleucum, 5; plumosum, 1; 

 prsestans, 35; pubescens, 47; pulcherrimum, 1; purpu- 

 rascens, 5; purpuratum, 3; purpureum, 1; Pynaerti,25; 

 roseum, 5; Rothschildianum, 37; Sallieri, 29; Sanderse, 

 4, 25 ; Sanderianum, 36 ; spectabile, 50 ; Spicerianum, 

 23; Stonei, 33; Studleyanum, 25 ; superbiens, 8, 25; su- 

 perbum, 1, 5; Sylhetense, 25; Thibeticum, 45; tonsum, 

 10; Veitchianum, 8 ; venustum, 11; Victoria-Marie, 39; 

 villosum, 28; virens, 13; virescens, 5; volonteanum, 15 ; 

 Warnerianum, 1. Many other names are accounted for 

 in the supplementary lists. 



A. Leaves tesselated (or checkered in squares). 



B. Petals more or less ligulate, smaller than the 



upper sepil. 



C. Upper sepal veined with green and purple : spots 



on the petals marginal. 



1. barbatum, Lindl. Lvs. oblong, about 6 in. long, pale 

 beneath, upper surface dull green with darker green 

 markings: scape long, reddish brown: ovary slender, 

 subtended by a small bract; upper sepal orbicular, 

 evenly reflexed, white, with a green translucent base; 

 veins green part way, becoming deep purple: petals 

 green at the base, finely dotted, gradually passing into 

 brown-pink at the apices, upper margin provided with 

 several blackish warts; labellum brown-purple, infolded 

 portion yellowish or purplish with raised dots; lower 

 sepal narrow, greenish, veined with green: staminode 

 pubescent, broadly crescent-shaped. June and July. 

 Malay Peninsula. B.M. 4234. Of this useful species 

 there are many excellent varieties in which the flowers 

 are larger or more richly colored. The variation in foli- 

 age is very remarkable. In general appearance this 

 species resembles C. Lawrenceanum. Many vars. in 

 cult. 



The following are varieties of C. barbatum : JBifldrum. A 

 chance variation, due undoubtedly in most cases to vigor. See 

 Crossianum below. Ccerulescens . Crossianum. Same as 

 Crossii. Crossii. Upper sepal very large, round-orbicular, 

 white, veined with green and apparently transversed by a band 

 of crimson; petals much deflexed. I. H. 35:72; 36: 81. A.F.6:555. 

 Giganteum=*nigmm. Gracile. Grandiflorum. Upper sepal 

 unusually large. Hendersonianum. Majus. A richly colored 

 and vigorous form. Mosdicum. Nanum. Nigrum. A dark 

 flower, the labellum of a very deep brown-purple. Nobile. 

 O'Brienianum, or O'Brieni. Pictum. Plumosum. This is not 

 a permanent variety. It does not maintain the characters to 

 which it owes its name. Pulcherrimum. Purpureum. Su- 

 perbum. Almost any good form of the type is called by this 

 name. Warnerianum, or Warnerii. See Crossii. 



2. nigritum, Reichb. f. Probably identical with C. pur- 

 puratum, var. obscurum. Dorsal sepal resembles that of 

 C. purpuratum, in other respects very similar to C. 

 barbatum. 



3. purpuratum, Lindl. Lvs. elliptic-oblong to narrowly 

 ovate, 4-5 inches long, glaucous, pale green tesselated 

 with darker dull green, pale beneath : scapes short 

 (about 5 in. long), purplish : ovary subtended by a 



