CHAP. LXVII. COMPO SlTiE. 1063 



CHAP. LXV. 



OP THE HALF-HAHDY LIGNEOUS SPECIES OF THE ORDER 

 LOBELIA^ CEJE. 



Tu'PA G. Don is a genus that contains some tall-growing herbaceous plants, natives of Chili, which 

 might technically be considered as suftruticose ; because, in frames and green-houses, they retain 

 their leaves, and do not die down during winter. Among ihese are T. salicifulUi G. Don ; Lobcl/fls 

 Tnpa Ait. ; L. gigantea Sims Bot. Mag., 1. 1785. ; and L. salicifulia Sw/., which grows to the height 

 Of 16 ft., and makes a fine appearance in the open garden during the summer season. 



ioW/ia arborca Forst. and L. sup^rba Cham, are natives of the Society Islands, superb plants 

 which grow to the height of H ft. or 15 ft. ; but neither of them have been yet introduced. A shrubby 

 species of LobchVi from Valparaiso, in Knight's Exotic Nursery, which has not yet received a name, 

 appears as if it would grow 8 fl. or 10 ft. high ; and, from its blue flowers, and deep green leaves, it 

 would make a fine appearance against a wall. 



CHAP. LXVI. 



HALF-HARDY PLANTS BELONGING TO THE ORDER CAMPANUL A'CE^. 



Miisschia. aurea Dumort. ; Campanula aiirea Z,., N. Dii Ham., 3. p. 169., Bot. Reg., t. 57. ; is an 

 evergreen' sufFruticose plant, growing to the height of 2 ft. or more, in Madeira and Teneriffe, 

 among rocks. It is an interesting shrub, which may be compared to a miniature tree. The stem 

 is simple, rather fleshy, marked by the scars left by the falling of the leaves, but furnished with 

 a crown of leaves at top, and annual floriferous branches, which are disposed in a leafy pyramidal 

 panicle. Leaves 3 — 6 in. long, pale green, shining. Peduncles 1 — 3.flowered. Flowers erect. 

 {Don's Mill., iii. p 772.) From the habit of this plant, it is better adapted for conservativerockwork, 

 than for being trained to a wall ; but it may be tried in both manners; for, as it ripens seeds freely, 

 the loss of plants can easily be supplied. 



CHAP. LXVII. 



OF THE HARDY LIGNEOUS PLANTS OF THE ORDER COMPO'SIT^. 



General Characteristics. Flowers grouped in heads ; those in each head so 

 disposed, and so environed by an involucre composed of bracteas, that cor- 

 responds to a calyx, as to seem to constitute but one flower. The leading 

 characteristics of the separate flowers are the following : — Ovary inferior, 

 bearing on its top, in many, pappus of some kind. Corolla of 1 petal. 

 Stamens 5, their anthers connate into a tube. Style encircled by the tube; 

 its top bifid, the portions of it extended above the tube. Ovary with 1 cell 

 and 1 erect ovule. (Lindlcy''s Introd. to N. S., and Lessing's Spiopsis Generum 

 Co7)i2)osifaru7)i, 1832.) The genera of this order that include hardy ligneous 

 species are but few. The following characteristics of them are derived chiefly 

 from Lessing's Si/iwps. Gen. Comp. The species are mostly natives of Europe 

 and North America, and are all of the easiest propagation and culture in any 

 common garden soil. 



SxiEHELi^N^ Lessing. Flowers bisexual. Pappus with its segments branched, 

 feathery, and in a single row. Rachis (receptacle) with chaffy projections. 

 Involucre of many rows of bracteas. Heads purplish violet. Small shrubs, 

 of the south of Europe. Leaves silkily tomentose beneath, entire. 

 jSa'ccharis R. Br. Sexes dioecious, or mostly so ; with the pappus, in the 

 male flowers, with its segments in a single row, in the female ones, with its 

 segments in several rows ; the corolla filiform. Where the sexes are 

 not dioecious, the flowers of several rows in the exterior of the head are 

 female : the rest Lessing has not characterised ; but it would appear, from 



