286 FLOWERS OF GARDEN AND GREENHOUSE 
They can stand much sun, and 7. tenwifolia will thrive even in light, 
dry soils. 7. erecta forms fine clumps for the border, whilst 7. patula 
and 7’, signata are very suitable for bedding purposes,—the var. pumila 
of the latter makes a good and enduring edging. The perennials 
should be lifted in autumn, wintered in frames, and divided in spring. 
Description of Plate 143. A, Tagetes patula, the French Mari gold: Fig.1, 
Plates148and144. section through flower-head; 2, a disk-floret with a tendency 
to become rayed; 3, normal disk-floret ; 4, seedling. B, 7. signata, the 
Mexican Marigold: Fig. 5, fruit, natural size; 6, ditto, enlarged; 7, a seedling. 
Plate 144. 7. erecta, the African Marigold, about two-thirds of 
the natural size, F ig. 1 represents one of the ray-florets detached, 
with the immature fruit at its base; 2 is a disk-floret, 
CONE FLO WERS 
Natural Order Composirz. Genus Rudbeckia 
RUDBECKIA (named by Linnzous in honour of Professor Olaf Rudbee, a 
Swedish botanist, who died $02) A genus comprising a couple of 
dozen North American herbs, with Showy flower -heads of purple, 
violet, or yellow. The ‘characters of the flower-head are—involucre 
of the species stil] grown have been introduced during the present century. 
Principal Species, Ruppeck1a AMPLEXICAULIS (stem - clasping leaves). 
Stems 2 to 3 feet high. Flower-heads 24 inches across ; 
rays orange - yellow, disk purple-brown ; June to August. Annual. 
Introduced 1793. 
R. GRANDIFLORA (large-flowered), Stem angular, branched, 34 feet 
shaped, rough, with slight rounded — 
» Tay-florets yellow, drooping, 2 inches long; disk 
dark purple ; September, Introduced 1830, 
R. Maxima (greatest), Stem 5 to 9 feet high. Leaves oval oF 
toothed, the lower ones 8 to 12 inches long. 
A on long stalks ; ray-florets pure yellow, 2 inches 
long, drooping ; August. Perennial 
ate-leaved), Stem 3 feet high. Leaves pinnately 
to seven lance-shaped leaflets, Ray-florets light 
July. Perennial, Introduced 1803. 
P. PURPUREA (purple), Stem rough, 3 feet high, Leaves oval- 
