A general term for the genus Nemophila in the family Periclinaceae. Eighteen species are distributed in North America. All are annual plants that spread by creeping. The leaves are soft, pinnately lobed, and alternate or opposite. The bell-shaped flowers with five lobes grow in the axillae. Nemophila menziesii (→ Persian blue), commonly cultivated in flower beds and pots, produces clear sky-blue flowers of the same quality as the naturalized plant Veronica persica. The flower diameter is 1.5 to 2 cm. The flowers of this variety, var. discoidalis , are purple-brown with a white margin, and the flower diameter is one size smaller than that of the parent species. Another variety cultivated is Nemophila maculata , which has dark purple spots like ink spots on the tips of its white petals. Seeds are sown in the fall and grown in a sunny, well-drained environment. Fertile soil with a high humus content is suitable. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
ハゼリソウ科ネモフィラ属の総称。 18種が北アメリカに分布する。いずれも一年草で,匍匐して伸び広がる。葉は柔らかく羽状に裂け,対生または互生。5裂する鐘形の花が腋生する。花壇や鉢植えで一般的に栽培されるネモフィラ・メンジーシー (→ルリカラクサ ) は,帰化植物のオオイヌノフグリと同質の澄んだ空色の花をつける。花径 1.5~2cm。この変種ディスコイダリス var.discoidalisの花は紫褐色で白色の覆輪 (ふくりん) が入り,花径は母種より一回り小さい。ほかに,白色の花弁先にインクのしみのような濃紫色の斑点が入るネモフィラ・マクラタ N.maculataが栽培される。秋に種子をまき,日当りと水はけのよい環境で育てる。腐植質の多い肥沃な土壌が適している。
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