Flora of North America species comparison

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Agalinis pulchella

Agalinis plukenetii

beautiful false foxglove, purple gerardia, St. Mark's false foxglove

Chattahoochee false foxglove, Plukenet's false foxglove
Stems

branched, 50–120 cm;

branches spreading-ascending, quadrangular-ridged, scabrous.

often leaning, simple or branched, 30–100 cm, bushy;

branches spreading-ascending, subterete proximally to quadrangular-ridged distally, glabrous or sparsely scabridulous distally.
Leaves

spreading-ascending;

blade filiform, 16–40 x 0.4–1 mm, margins entire, midvein harshly scabrous, adaxial surface scabrous;

axillary fascicles: length 1/2–1 times subtending leaves.

widely spreading to slightly ascending;

blade filiform, 18–45 x 0.2–0.8 mm, not fleshy, margins entire, adaxial surface scabridulous;

axillary fascicles absent.
Inflorescences

racemiform-paniculiform, flowers 1 per node, some flowers pseudoterminal;

bracts shorter than pedicels.

racemiform, flowers 1 per node, some flowers pseudoterminal;

bracts longer than pedicels.
Pedicels

spreading-ascending, 12–50 mm, scabrous.

spreading-ascending, 3–8 mm, glabrous.
Flowers

calyx hemispheric, tube 3–4(–5) mm, glaucous, lobes erect, subulate, 0.1–0.6 mm;

corolla dark pink to rose, with 2 yellow lines and purple spots in abaxial throat, 22–33 mm, throat sparsely pilose externally and glabrous within across bases of adaxial lobes, sparsely villous at sinus, lobes: abaxial reflexed-spreading, adaxial spreading, 6–12 mm, equal, glabrous externally;

proximal anthers parallel to filaments, distal perpendicular to filaments, pollen sacs 2.5–3.8 mm;

style strongly exserted, 9–18 mm.

calyx hemispheric, tube 3–5 mm, glabrous, lobes deltate-subulate, 0.2–1 mm;

corolla dark pink to rose pink, with 2 yellow lines and dark pink spots in abaxial throat, 18–30 mm, throat pilose externally and villous within across bases and sinus of adaxial lobes, lobes: abaxial spreading, adaxial reflexed-spreading, 6–10 mm, abaxial pilose externally, adaxial glabrous externally;

proximal anthers parallel to filaments, distal perpendicular to filaments, pollen sacs 2.2–4 mm;

style exserted, 11–17 mm.
Capsules

globular, 4–6 mm.

globular, 4–5 mm.
Seeds

black, 0.5–0.8 mm.

dark brown to black, 0.5–0.8 mm.
2n

= 26.

= 28.

Agalinis pulchella

Agalinis plukenetii
Phenology Flowering Sep–early Oct. Flowering late Sep–early Nov.
Habitat Dry, open pine savannas, open pine-oak sandhills, dry upslope areas of wiregrass-dominated mesic prairies, chalky glades or roadsides, dry sandy or clay roadsides beside existing or remnant savannas. Dry to xeric, sandy, gravelly or clay roadsides, pine-oak forests, margins of savannas, disturbed ground.
Elevation 0–100 m. (0–300 ft.) 0–300 m. (0–1000 ft.)
Distribution
from FNA
AL; FL; GA; LA; MS; TX
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; FL; GA; LA; MS; SC; TN
[BONAP county map]
Discussion

Agalinis pulchella is an uncommon species in the easternmost area of its range and is common only westward in southeastern Texas.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Agalinis plukenetii can be bushy, relatively large, and showy. Agalinis plukenetii is a common component of dry to xeric roadsides in the southern portions of its range. It readily colonizes open, dry ground with very little vegetation. It was reported in South Carolina (F. W. Pennell 1935) based on a specimen that has little label data; its occurrence there is doubtful.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 551. FNA vol. 17, p. 550.
Parent taxa Orobanchaceae > Agalinis Orobanchaceae > Agalinis
Sibling taxa
A. aphylla, A. aspera, 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. purpurea, A. setacea, A. skinneriana, A. strictifolia, A. tenella, A. tenuifolia, A. viridis
A. aphylla, A. aspera, 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. pulchella, A. purpurea, A. setacea, A. skinneriana, A. strictifolia, A. tenella, A. tenuifolia, A. viridis
Synonyms Gerardia pulcherrima Gerardia plukenetii
Name authority Pennell: Bull. Torrey Bot. Club 40: 428. (1913) (Elliott) Rafinesque: New Fl. 2: 63. (1837) — (as plukeneti)
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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