Amsonia ciliata var. tenuifolia (Threadleaf bluestar)

Threadleaf bluestar is native to the southeastern United States. This is a cultivar, and several others exist too.

Plants: 2–3′ (60–91 cm) tall. Stems are covered with fine hairs, and release a milky sap when broken.

Flowers: Produces panicles of light blue starlike flowers with five petals. Flowers appear in May.

6/17/2012 · Coastal Maine Botanical Gardens, Boothbay, Maine · ≈ 12 × 17″ (29 × 44 cm) ID is uncertain

5/15/2010 · Garden in the Woods, Framingham, Massachusetts · ≈ 1½ × 1′ (52 × 34 cm)

5/15/2010 · Garden in the Woods, Framingham, Massachusetts · ≈ 15 × 10″ (39 × 26 cm)

Kingdom	Plantae	Plants, but not fungi, lichens, or algae (from Stearn's Botanical Latin)
Subkingdom	Tracheobionta	Vascular plants—plants with a “circulatory system” for delivering water and nutrients
Division	Magnoliophyta	Flowering plants, also known as angiosperms
Class	Magnoliopsida	Dicotyledons—plants with two initial seed leaves
Subclass	Asteridae	A large class that encompasses asters
Order	Gentianales	Gentians, coffee, gardenias, frangipani, many others
Family	Apocynaceae	Dogbane family
Genus	Amsonia	Bluestars; named for botanist Charles Amson
Species	ciliata	Name given to indicate a slight fringing like an eyelash that might occur on petals, leaves, petioles or other plant parts
var.	tenuifolia	With finely-divided, slender leaves