546 



ARBORETUM ET FRUTICETUM BRITANNICUM. 



SENE V CIO Lessing. Receptacle naked, or alveolate. Styles penciled. Pap- 

 pus pilose, caducous. 



MUTI'S/.^ Cav. Receptacle naked, Achenia somewhat beaked. Pappus of 

 many series, feathery. 



With the exception of J?accharis, there is scarcely a plant belonging to 

 the order Compositae which is truly ligneous, and at the same time hardy in 

 British gardens, and sufficiently bulky for a general arboretum. Where an 

 arboretum is planted on a lawn, and where it is not intended to cultivate the 

 soil about the roots of the plants, there is not a single genus in this order, with 

 the exception of that mentioned, which could with propriety be introduced. 

 Even the common southernwood, if not planted in dug soil or on rock work, 

 would soon become stunted, and would ultimately die off. Nevertheless, in a 

 technical enumeration of trees and shrubs, these species could not be omitted. 



GENUS I. 



Lessing, THE STJEHELINA. Lin. Syst. Syngenesia 

 ^Equalis. 



Identification. Lessing Synops. Gen. Compos., p. 5. ; Ait. Hort. Kew., ed. 2., vol. 4. p. 512. 

 Synonyme. Staeheline, Fr. and Ger. 



Derivation. So named in honour of John Henry Steefielin, and his son Benedict, Swiss botanists 

 and physicians. 



Gen. Char., fyc. Heads homogamous, equal-flowered. Involucrum cylindrical, 

 the scales imbricated and adpressed. Receptacle flat, paleaceous; the 

 paleas narrow, persistent, hardly concrete at the base. Corolla 5-cleft, re- 

 gular. Filament glabrous. Anthers appendiculate at top, bisetose at the 

 base : the tails more or less bearded. Style bearded on the thickened part. 

 Stigmas concrete at base, and free at apex, obtuse. Fruit oblong, areolate 

 at apex. Pappus in one series, the hairs combined at the base into 4 or 6 

 bundles. (G.Don.) 



Leaves simple, alternate, exstipulate, evergreen ; linear, hoary or silky 

 beneath Flowers in terminal spikes, usually naked. Subshrubs, ever- 

 green ; South of Europe , of easy culture in dry soil, and propagated by 

 cuttings or seeds. 



a. 1. S. DU^BIA L. The doubtful, or Rosemary- 

 leaved, Stsehelma. 



Identification. Lin. Sp., 1176.: Less. Syn. Gen. Compos., p. 5 ; 



Willd. Sp. PI., 3. p. 1783. 

 Synonyme. S. rosmarinifblia Cass., according to Less. Syn. Gen. 



Compos., p. 5. 

 Engravings. Ger. Prov., p. 190. t. 6.; Lam. 111., 6G6. f. 4. ; and 



ourfif,'. 1017. 



Spec. Char., fyc. Leaves sessile, linear, finely 

 toothed, tomentose beneath. Inner bracteas 

 of the involucre lanceolate, elongate. (Willd.) 

 An evergreen undershrub. South of Europe. 

 Height 2 ft. to 3 ft. Cultivated in 1640. Flowers 

 purple, fragrant ; June and July. 



GENUS II. 



1017. StseheUivj d&bia. 



/?A'CCHARIS R. Br. THE BACCHARIS, or PLOUGHMAN'S SPIKENARD. 

 Lin. Syst. Syngenesia Superflua. 



Identification. Less. Syn. Gen. Compos., p. 204.; Ait. Hort. Kew., ed. 2., vol. 5. p. 25. 

 Synunymes. Bacchai.te, Fr. ; Baccharis, Ger. 



