Sow in the second and the last week, on a warm border of a light sandy soil, with an east aspect, any free-flowering hardy annuals as Silene pendula, Nemophila, &c., for planting in spring; and auricula and primula seeds in pots and boxes.
Of four genera which Hooker singles out as the largest in Sikkim, in China Corydalis has 76 species, Saxifraga 58, Pedicularis 129, and Primula 77.
The observations of Darwin as to the fertilization of orchids, Primula, Linum and Lythrum, and other plants, and the part which insects take in this function, gave an explanation of the observations of Christian Konrad Sprengel, made at the close of the 18th century, and opened up a new phase in the study of botany, which has been followed by Hermann Miller, Federico Delphic) and others, and more recently by Paul Knuth.
- Long-styled, L, and short-styled, K, flowers of Primula sinensis.
For example, in the genus Primula, a highly characteristic genus of the alpine flora, whose members are among the most striking ornaments of the rocks, the single northern species, P. farinosa, grows only in marshy meadows.
Clianthus Clivia Cobaea* Coleus Coprosma Cordyline Correa Cuphea Cyclamen Cyperus Cytisus Darwinia (Genetyllis) Diosma Dracaena Eccremocarpus* Epacris Epiphyllum Erica Eriostemon Erythrina Eucalyptus Eupatorium Eurya Ficus Fuchsia Grevillea Haemanthusf Heliotropium Hibiscus Hoya* Hydrangea Impatiens Jasminum * Justicia Kalosanthes Lachenaliaf Lantana Lapageria * Liliumt Lophospermum* Mandevillea* Manettia* Mutisia* Myrsiphyllum* Maurandya * Nerinef Nerium Pelargonium Petunia Pimelia Plumbago* Polianthesf Primula Rhododendron Richardia (Calla) f Salvia Sarracenia Solanum Sparmannia Statice Strelitzia Streptocarpus Swainsonia Tacsonia* Tecoma Tradescantia Vallotaf Spring Bedding.
Sylvestris; Phloxes, like P. subulata, with its varieties setacea, Nelsoni, nivalis; the single-flowered varieties of the Primrose, Primula vulgaris; the Polyanthuses; Pyrethrum Parthenium aureum, called Golden Feather; Sempervivum calcareum; the pinkflowered Silene pendula; self-coloured varieties of the Pansy, V.
Flower Garden, &c. - Sow in the beginning of this month all halfhardy annuals required for early flowering; also mignonette in pots, thinning the plants at an early stage; the different species of primula; and the seeds of such plants as, if sown in spring, seldom come up the same season, but if sown in September and October, vegetate readily the succeeding spring.
I), but generally perennial as in Primula, 2 (After Wossidlo.
The leaves form a radical rosette as in Primula (primrose, cowslip, &c.), or there is a well-developed aerial stem which is erect, as in species of Lysimachia, or creeping, as in Lysimachia Nummularia (creeping jenny or money-wort).
The chief British genera are Primula, including P. vulgaris, primrose, P. veris, cowslip, P. elation, oxlip, and the small alpine species P. farinosa, with mealy leaves; Lysimachia, loose strife, including L.
Of herbaceous plants species of Ranunculus, Potentilla, Geranium, Thalictrum, Primula, Gentiana and many other European forms are common.
Other prominent species are Campanula, Pyrethrum, aconite, Cephaelis, speedwell, Alchemilla sericea, Centaurea macrocephala, Primula grandis and a species of primrose.
The primula is thus spoken of, on account of its yellow centre, also the adonis, or "pheasant's eye," and the blue veronica, or germander speedwell.
For instance, in Primula and Linum some flowers have long stamens and a pistil with a short style, the others having short stamens and a pistil with a long style.
- Pistil of Primrose (Primula) composed of five carpels which are completely united; o, ovary; s, style; st, stigma.
- Flower of cowslip (Primula veris) cut vertically.
Thus the seeds of Primula japonica, though sown under precisely similar conditions, yet come up at very irregular intervals of time.
Similar phenomenon is seen in two r widely separated genera of flowering plants: Primula Auricula and Gunnera (Halorageae).