820 



CCELIA 



CCELOGYNE 



neled above, arching: fls. 2 in. long, erect, 3 or 4 in num- 

 ber, with the mid-lobe of the lip orange-colored. Guate- 

 mala. B.M. 6628. 



C. densifldra, Rolfe. Characterized by a dense-fld. raceme, 

 wingless ovary and oblong mentum. Cent. Amer. 



GEORGE V. NASH.f 



. Details of Coelogyne speciosa. 



CCELOGYNE (hollow pistil). Orchidacese. Popular 

 epiphytic warmhouse orchids of the eastern hemisphere. 



Pseudobulbs tufted or at intervals on the st.: fls. 

 in racemes, opening simultaneously or in succession; 

 sepals and petals similar, spreading or reflexed; lip 

 3-lobed, the lateral lobes erect, inclosing the slender 

 column, the middle lobe flat or recurved, keeled; column 

 slightly curved, winged above; pollinia 4. Species 

 about 115, distributed from N. India to Ceylon, middle 

 China, and in the islands of the Indian Ocean. The 

 botanical details of Coslogyne speciosa are shown in Fig. 

 1021. At the top is a general view of the fl. Below, on 

 the left, is the column, front and side view. In the 

 center is the lip, with the column lying along its top. 

 Below the lip, on the left, is the stigma. To the right, 

 on the bottom row, are the pollinia, 

 front and back view; and at the 

 right center are separate pollen 

 masses. 



Coelogynes may be grown in pots, 

 baskets or pans, using pots for small 

 plants, and larger receptacles when the 

 plants require them; but when a pan 

 larger than 12-inch is necessary, it is 

 best to use perforated ones so that the 

 material may be well aerated and not 

 become unsuitable for the roots. All the 

 species are of rambling habit and large 

 specimens may soon be had by growing 

 on, provided the material at the roots 

 is kept in a sweet healthy condition. 

 When, however, it becomes necessary 

 to divide a plant, this is best done di- 

 rectly after flowering, carefully separat- 

 ing the running shoots, cutting off about 

 three of the last-made bulbs with all the 

 roots attached, planting these in suit- 

 able-sized receptacles, being very careful 

 to point the growing end away from the 

 edge, or toward the center, so that they 

 will not so readily outgrow again. The 

 material to use is osmundine with a 

 little sphagnum moss if it can be made 

 to grow, packing all very firm about the 1022. Coslogyne 

 roots so that too much water will not sangeana. 



be held about the roots. Place in the shady part of 

 a warm house until root-action begins; but, during 

 the hot summer months, the varieties, of C. cristata 

 may with great benefit be placed in a frame in a 

 shady place outdoors, there to remain until danger of 

 frost in October. Treated in this way, the plants will 

 bloom much better. They should all be placed on 

 inverted pots when outside to exclude vermin. When 

 brought indoors the bulbs will be finishing up for 

 bloom, and as they are terrestrial plants, weak 

 manure-water should be given at every watering. A 

 glance at the roots and their structure will show how 

 they differ from the epiphytal orchids such as the cat- 

 tleyas. Coelogynes, being evergreen, should never be 

 quite dry at the roots, or shriveling will result; this 

 always is the case after flowering or repotting; but, 

 when growth commences, they soon plump up again. 

 It is often desired to grow these plants in baskets. 

 Space can then be made for them overhead in the cool- 

 houses in winter, bringing a few at a time into warmth, 

 thus having succession of bloom for three months for 

 cutting, house or conservatory decoration, where they 

 last a long time. There are more than 100 kinds of ccelo- 

 gynes, many of which are but of botanical interest. C. 

 pandurata, C. Dayana and C. Sanderiana are warm- 

 house plants and should be kept at a minimum tempera- 

 ture of 60 in winter. C. nervosa, C. flacdda, C. nitida, 

 and C. Massangeana are coolhouse plants, often grown 

 in collections; but C. cristata and its forms are the most 

 valued, especially the variety maxima once so scarce, 

 but now plentiful; this makes large bulbs and longer 

 spikes of bloom. The Chatsworth variety, by some 

 considered the same as maxima, hololeuca or alba 

 as it is most often known in gardens, is a pure white 

 form, perhaps the whitest of all orchids. This is 

 inclined to ramble, owing to the length of rhizome 

 between each bulb or growth, and needs attention in 

 repotting frequently; it is also the latest to flower. C. 

 Lemoniana has a pretty lemon-yellow blotch on the 

 lip instead of the usual orange and is very pretty by 

 contrast with the other 

 forms. When it is desired 

 to increase the stock of 

 plants, the back bulbs taken 

 off at potting time may be 

 planted similar to the other 

 pieces and will grow on, 

 but cannot be expected to bloom for two 

 years. (E. O. Orpet.) 



alba, 1, 9. 

 asperata, 15. 

 barbata, 4. 

 Chatsworthii, 9. 

 citrina, 9. 

 corrugata, 6. 

 cristata, 9. 

 Dayana, 10. 

 flaccida, 3. 

 Fcerstermannii, 8. 

 hololeuca, 9. 

 lactea, 2. 

 Lemoniana, 9. 



Lowii, 15. 

 Massangeana, 12. 

 maxima, 5, 9. 

 Mayeriana, 14. 

 nervosa, 6. 

 nitida, 5. 

 ocellata, 5. 

 pandurata, 13. 

 Parishii, 16. 

 salmonicolor, 1. 

 Sanderiana, 7. 

 speciosa, 1. 

 tomentosa, 11. 



Mas- 



KEY TO THE SPECIES. 



Racemes with fls. opening in succession. 1. speciosa 

 .. Racemes with fls. opening all at once. 

 B. Scape of the raceme naked between 

 the pseudobulb and lowest, fl.-bract. 

 c. Imbricated bracts below fls. none. 

 D. Keels of lip extending into 



broadly ovate front lobe 2. lactea 



DD. Keels of lip not extending into 



ovate front lobe : 3. flaccida 



cc. Imbricated bracts below fls. several, 



close 4. barbata 



BB. Scape of raceme with 1 or few scales 

 between pseudobulb and lowest fl-. 

 bract. 



