GREENHOUSE AND CONSERVATORY PLANTS 79 



genus shows greater variation in this respect. Some of the best 

 known stove kinds are as follows: C. Baraguini, C. bella, C. 

 fascinator, C. Lindeniana, C. Makoyana, C. vitlata var. albo- 

 lineala C. roseo-picta, C. zebrina, and C. Veitchiana. Those which 

 may be grown cooler are: C. Pavonii (tubispatha), a species which 

 loses its leaves and goes to rest for the Winter; C. ilhistris, C. 

 Lietzei and C. piilchella. The latter resembles C. zebrina in the upper 

 portions of the leaves, but the inferior margins are almost green. 



Culture. Most of the kinds are stove plants, growing in shade 

 all the year round, with a minimum temperature of 60 degrees. 

 They need an abundance of water at all times. In Winter, when 

 the benches are apt to get dry quickly, the pots should stand on a 

 layer of sphagnum moss. Some of the species will succeed in a 

 temperate house, and a few of the stove kinds may be subjected to a 

 lower temperature, without injury, after they have made their 

 growth. None of the species should be allowed to flower, as this only 

 weakens the plants and seed is not necessary, as they all divide very 

 freely. During the growing season, if drained thoroughly, they can 

 hardly be overwatered. 



Propagation. Calatheas, which are freshly divided, should 

 not be potted in fresh soil until new roots have been formed. This 

 condition may be brought in the following manner: Knock the 

 plants out of the pots before growth commences; wash the soil 

 from among the roots; prune out those not wanted, and divide into 

 clumps, not too small, about large enough to go into a s-inch pot, and 

 put in the propagating bed. Let the air be close and moist, and the 

 glass shaded. When a few fresh roots have been formed they take 

 very quickly with the soil after potting. 



CALCEOLARIA (Knitting Bag Plant). The Calceolaria, both 

 shrubby and herbaceous, is as well-known in western Europe as the 

 Zonal Pelargonium in America. The shrubby kinds are there much 

 used in bedding, producing very gaudy effects. They dehght in ^ 

 cool, moist atmosphere, and our hot Summers make short work of 

 them. The herbaceous hybrids derived mainly from C. crenatiflora 

 and C. aracknoidea, are raised from seeds sown about the month of 

 August. The seeds are very small and should be sown on the sur- 

 face of the soil and pressed down, covering with glass until the seed 

 leaves can be seen. At all times the plants require a cool, airy spot 

 when in the greenhouse. From the seedling stage until the plants 

 are likely to get hurt by frost they should be kept in a frame. Green- 

 fly is their greatest insect enemy, and must be prevented from gain- 



