가두리정향풀-Amsonia ciliata Walter

과명	Apocynaceae (협죽도과)	속명	Amsonia (정향풀속)
전체학명	[정명] Amsonia ciliata Walter	추천명	가두리정향풀
이명		외국명	Bluestar; Milkweed Blue

추천명변경: 킬리아타정향풀 -> 가두리정향풀

Amsonia ciliata, the fringed bluestar, is a North American species of flowering plant in the dogbane family, first described in 1788.

Amsonia ciliata - Wikipedia

Habit - Perennial forb, sometimes with woody base.

Stems - Ascending, to 50 cm, sometimes branched, glabrous or sparsely hairy.

Leaves - Alternate, often appearing nearly whorled at some nodes, sessile. Leaf blades mostly 1.5-5.0 cm long, those of the main stem leaves linear, the lowermost sometimes narrowly oblanceolate, glabrous, the margins sometimes revolute, the upper surface somewhat shiny, the undersurface pale green and often somewhat glaucous.

Inflorescences - Loose terminal clusters, 4-6 cm long at flowering, positioned above the leaves. Flower stalks 8-10 mm long, often tinged with blue.

Flowers - Calyces glabrous, the lobes 1.0-1.2 mm long, triangular. Corollas densely hairy internally, glabrous externally, the tube 6-7 mm long, about 1 mm wide at base, the throat 2.0-2.4 mm wide, the lobes 5-8 mm long, 1.5-2.5 mm wide.

Fruits - Fruits 7-13 cm long, more or less erect and held above the leaves, not constricted between the seeds, often dehiscing by a slit toward the tip. Seeds 4-7 mm long, 1.2-1.6 mm wide, the surface with wrinkled and pitted or with low, corky ridges, dark brown.

Flowering - April - May.

Habitat - Limestone glades, bald knobs, edges of limestone bluffs along streams.

Origin - Native to the U.S.

Lookalikes - None when flowering.

Other info. - This species can be found in just four southern Missouri counties. It is somewhat more common southward, ranging down into Texas, and is also present in several southeastern states. The plant can be identified by its crowded, very thin leaves, and its big inflorescences of bluish flowers. The species is somewhat variable in leaf width and corolla size and has been subdivided on that basis. Missouri plants are assignable to var. filifolia, which has very narrow leaves with revolute margins. The leaves are rugose. The plants are attractive and deserving of wider cultivation.

Amsonia ciliata page (missouriplants.com)

 

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