B L U 



91 



BOM 



" No seed ever attains the power of spotted form. Its caterpillar injures 

 germinating, unless the pollen from the the wood of the elm, apple, pear, horse- 

 stamens in the same, or some nearly al- chestnut and walnut, 

 lied flower, has reached and impregnated M. Kollar, in his valuable work on 

 its pistils." — Johnson's Princ. of Gard. predatory insects, says : — " The cater- 



BLUMENliACFHA. Two species 

 Hardy annuals. Seeds. Rich loam. 

 BOBARTIA. Three species. Green 



pillar of this niotli is smaller than that 

 of the preceding sjiecies, its length be- 

 ing only one inch and a half or two 



house herbaceous perennials. D.auran- inches. It is hatched in August, moults 

 tiaca is hardy. Division. Sandy peat, for the first time in September, and is 

 BO(X()NIA. Two species. Stove ever- full grown in June of the following year. 



green shrubs. Cuttinu.s. Loam 



BCF:BERA. Two sjiecies 

 sanlhemoides is a hardy annual. B 

 cana, a green-house evergreen shrub. 

 Seeds. Loamy peat or common soil. 



BOG-EARTH, or peat earth, is the 

 soil required for a class of plants that 

 are generally designated American, 

 though not all of them are natives ol 



From its existence till its transforma- 

 B. chry- tion it is yellow, with raised shiny black 

 " ' dots, on each of which there is a fine 

 short hair. 



" It undergoes its transformation in a 

 strong web under the bark, becoming 

 a brownish-yellow pupa, capable of 

 much extension, dark brown at both 

 extremities, with short wingsheaths. 



156 

 2 



110 



that (piarter of the globe. Bog-earth j horn-like point bent forward on the 



head, and fine hooks on the back of the 

 abdominal segments. 



" The moth appears in August to- 

 wards evening, and is a native of almost 

 all Europe. It is very remirkable from 

 its colour; the ground is white on vari- 

 ous parts, on which steel blue dots are 

 scattered. It measures, with extended 

 wings, two inches and a half. 



" The female introduces her round 

 orange-coloured eggs, by means of her 

 strong ovipositor, into the trees before 

 named." 



B. bucephala. Buff-tip moth, produces 

 a caterpillar which feeds on the leaves 

 of the lime, beech, birch, alder, oak, 

 willow, and more rarely on those of the 

 rose, apple and pear. M. Kollar says: 

 — " This caterpillar does not appear till 

 the latter end of June or the beginning 



of the best description is thus consti 



luted : — 



Kine siliceous sand . . 



Unaltered vegetable fibre 



Decomposing vegetable) 



matter ) 



Silica (Flint) 103 



Alumina (clay) IG 



O.'iide of iron 4 



Soluble vegetable and) . 



saline matter J 



Muriate of lime .... 4 



Loss 



BOG EARTH PLANTS. See Ameri- 

 can Plants. 



BOLBOPHYLLUM. Nineteen spe- 

 cies. Stove epiphytes. Division. They 

 require a strong damp heat. 



BOLDOA. Two species. Stove 

 jilants. B. lanceolata an evergreen 



shrub. B. purpurescens an herbaceous ' of July, and feeils to the end of Septem- 



perennial. Cuttings. Sandy peat 



BOLEUM Asperum. Half hardy ever- 

 green shrub. Seed. Sandy peat. 



BOLIVARIA trifida. Green-house 

 evergreen shrub. Cuttings. Loam and 

 peat 



ber; when fully grown it measures 

 nearly two inches long, and is about as 

 thick as a goosecjuill. It is thinly haired,' 

 dark brown, with interrupted slender 

 yellow longitudinal stripes, which are 

 intersected by a yellow cross, and be- 



BOLTONIA. Two species. Hardy her- tween each segment. 



Division. Sandy 



Four 

 Half 



baceous perennials 

 loam. 



BOiMBAX. Silk cotton tree, 

 species. Stove evergreen trees 

 ripened cuttings. Sandy loam. 



BOM BYX, a gen us of moths, of which 

 the following are injurious to the gar- 

 dener. 



B. asculi, the horse-chestnut, or wood 



" The moth appears in May and June, 

 when it sits with its wings bent down- 

 wards, covering the whole body so that 

 it resembles a scroll. When its wings 

 arc expanded, it measures from two and 

 a half to three inches wide, the abdo- 

 men is pale yellow, spotted with black 

 on the sides. The upper wings are 

 notched, ash-grey, and silver-grey at 



leopard moth, the last being the most the base and inner edge, a pale yellow, 

 appropriate name, as descriptive of its or silver grey kidney-shaped spot is 



