Perennial herb 0.5 - 1 m tall Stem: erect, and unbranched below the inflorescence. Leaves: numerous, alternate, closely spaced, and deeply pinnately divided into very narrow, linear, or thread-like segments. Inflorescence: terminal, branched or unbranched, slender, elongate, 20 - 40 cm tall, and leafy at the base. Flowers: bright red outside, yellow inside, 2 - 4 cm long, 1 - 2 cm wide, radially symmetric, with a very long, slender tube, and flared lobes. Sepals: five, but fused into a 3 - 5 mm long tube, then separating into longer, linear to long-triangular lobes with pointed tips. Petals: five, but fused into a long, slender tube, then separating into 0.7 - 1 cm long, flaring, somewhat triangular lobes. Stamens: five, hairless, erect, attached inside the petal tube, but rarely extending beyond the tube. Pistil: with a single, three-chambered, superior ovary; and a single, elongate style with three, linear stigmas, which extend beyond the petal tube. Fruit: a three-chambered, numerous-seeded capsule, which splits open lengthwise along the outside into each chamber.
Similar species: Ipomopsis rubra is fairly distinct from our other members of the Polemoniaceae family since none of them have such finely dissected leaves, or bright red flowers with extremely long tubes.
Flowering: July to September
Habitat and ecology: Introduced from the southern United States, cultivated in gardens, and occasionally escaping to sandy soils, especially along roads or in cemeteries.
Occurence in the Chicago region: non-native
Notes: This species, with its bright red flowers, is pollinated by hummingbirds. Members of the genus Ipomopsis have in the past been placed in the genus Gilia, but due to differences in chromosome number, and morphological characters, they are now accepted as separate genera.
Erect biennial often 1 m, usually simple to the infl; lvs numerous, pinnately parted into narrowly linear segments; infl elongate, simple or branched, forming a slender panicle 2-4 dm; cal-tube 3-5 mm, shorter than the linear lobes, cor scarlet outside, yellow inside, 2-4 cm, the lobes 7-10 mm; 2n=14. Native of s. U.S., occasionally escaped from cult. in our range. (Ipomopsis r.)
Several western annual spp. of Gilia, with smaller fls, these not scarlet, are occasionally intr. but do not persist. Spp. of Navarretia, with unequal, commonly spinulose-tipped cal-lobes, the rather small fls in dense cymose heads, are also sometimes temporarily intr.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.