Flora of North America species comparison

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Agalinis aspera

rough false foxglove, rough foxglove, tall false foxglove
Stems

simple or branched, 7–100 cm;

branches ascending, terete, ridged, scabridulous proximally, angular, ridged, scabrous distally, sometimes sparingly.
Leaves

ascending;

blade linear to filiform, 15–50(–60) x 0.4–1.5(–2) mm, margins entire, siliceous, adaxial surface scabrous;

axillary fascicles well developed, shorter to longer than subtending leaves.
Inflorescences

racemes, flowers 1 or 2 per node;

bracts longer than pedicels.
Pedicels

ascending-spreading, 4–20 mm, glabrous or proximally scabridulous.
Flowers

calyx campanulate, tube (3–)3.5–5 mm, glabrous, lobes triangular-lanceolate, (1.5–)2–4 mm;

corolla pink, with 2 yellow lines and dark red spots in abaxial throat, 15–28 mm, throat pilose externally and glabrous within across bases and sinus of adaxial lobes, lobes: abaxial projecting to spreading, adaxial spreading to erect, 3–7 mm, glabrous externally;

proximal anthers parallel to filaments, distal perpendicular to filaments, pollen sacs 1.8–3 mm;

style included or exserted, 8–15 mm.
Capsules

ovoid-oblong, 6.5–11 mm.
Seeds

dark brown, 0.9–2 mm.
2n

= 26.

Agalinis aspera
Phenology Flowering Jul–Sep.
Habitat Tallgrass or loess hills or upland prairies, dry rocky or sandy soils over limestone, limestone bluffs, gravelly moraines.
Elevation 200–400 m. (700–1300 ft.)
Distribution
from FNA
IA; IL; KS; MN; MO; MS; ND; NE; OK; SD; WI; MB
[WildflowerSearch map]
[BONAP county map]
Discussion

Plants of Agalinis aspera have strongly siliceous hairs that are rough to the touch and appear marbled. The style is usually pilose.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 539.
Parent taxa Orobanchaceae > Agalinis
Sibling taxa
A. aphylla, A. auriculata, A. caddoensis, A. calycina, A. decemloba, A. densiflora, A. divaricata, A. edwardsiana, A. fasciculata, A. filicaulis, A. filifolia, A. flexicaulis, A. gattingeri, A. georgiana, A. harperi, A. heterophylla, A. homalantha, A. laxa, A. linifolia, A. maritima, A. navasotensis, A. neoscotica, A. obtusifolia, A. oligophylla, A. plukenetii, A. pulchella, A. purpurea, A. setacea, A. skinneriana, A. strictifolia, A. tenella, A. tenuifolia, A. viridis
Synonyms Gerardia aspera, A. greenei
Name authority (Douglas ex Bentham) Britton: in N. L. Britton and A. Brown, Ill. Fl. N. U.S. ed. 2, 3: 209. (1913)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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