388 FLOWERS OF GARDEN AND GREENHOUSE 



clump during the summer so that the creeping shoots become nearly 

 covered, and the spaces between them filled up. This will induce them 

 to root ; and if the clump is taken up in the following spring and broken 

 apart, it will be found that each portion has roots ready formed. This 

 section is well adapted for growing in rock-gardens. 



Description of Plate 184. Phlox subulatcL A, the type, and B, a 



Piatesi84aiidi85. variety, with broader leaves. Figs. 1 and 2 are the flowers 

 of A and B respectively cut through. 



Plate 185. P. panicidata, showing several of its colour varia- 

 tions. Fig. 1 is a section of the flower. 



Natural Order PoLEMONiACE^. Genus Gilia 



GiLiA (named in honour of S. P. Gilio, a Spanish botanist, eighteenth cen- 

 tury). A genus of about sixty-five species of herbs, mostly hardy annuals, 

 with flowers more or less funnel-shaped or wheel-shaped, with the parts 

 agreeing in number with Phlox, but the stamens are inserted at the 

 mouth of the corolla-tube. They are natives of America. 



The plants constituting this genus were formerly split 

 up into the genera Fenzlia, Ipomopsis, Leptodactylon, 

 and Leptosiphcm, and to some gardeners they are still known under 

 these names. They are of comparatively recent introduction, Gilia 

 coronopifolia, the earliest known, dating only from 1726, whilst those at 

 present grown have all been introduced during the present century. Of 

 these, G. achillcefolia, G. linifiora, G. midticaulis, and G. tricolor were 

 all introduced from California in 1833, whilst G. micrantha dates only 

 from 1870, and G. Brandeyei, a Colorado species, from 1878. 

 Principal species. ^^^^^ ACHILL.EFOLTA (Milfoil-leaved). Stems 1 foot 



high. Leaves twice or thrice pinnate, the leaflets awl- 

 shaped. Flowers purplish -lilac, in many -flowered corymbs; August. 

 There are varieties with flowers white and red. Annual. 



G. ANDROSACEA (Androsace-like). Stems branching, 9 to 12 inches 

 high. Leaves in pairs, deeply cut into slender segments, arranged 

 palmately (see Plate 186) and fringed. Flowers lilac, pink, or whitish, 

 with yellow or darker tinted throat, the corolla-tube twice the length of 

 lobes ; August. The var. rosacea has flowers some tint of red. Annual. 

 Also known as Leptosiphon androsaceus. 



G. Brandegei (Brandegee's). Stem unbranched, 9 to 12 inches 



