Flora of North America species comparison

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Agalinis pulchella

Agalinis viridis

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

green false foxglove
Stems

branched, 50–120 cm;

branches spreading-ascending, quadrangular-ridged, scabrous.

branched, 15–70 cm;

branches laxly and widely spreading, proximal arching upward, subterete proximally, quadrangular, with siliceous ridges and wings on angles distally, glabrous, sometimes scabridulous.
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.

spreading to spreading-ascending;

blade linear, 8–30 x 0.5–2.3(–3) mm, not fleshy, margins entire, siliceous, adaxial surface finely scabrous;

axillary fascicles absent.
Inflorescences

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

bracts shorter than pedicels.

racemiform, with lateral branches bearing solitary flowers, flowers 1 per node;

bracts both shorter and longer than, or shorter than, pedicels.
Pedicels

spreading-ascending, 12–50 mm, scabrous.

spreading to spreading-ascending or arching, 3–14 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 campanulate, tube 3–5.5 mm, glabrous, lobes lanceolate, 1.3–2.5 mm;

corolla pale pink (sometimes nearly translucent), with 2 yellow or pale lines and pale purple spots in abaxial throat, 8–12 mm, throat pilose externally and villous within across bases and sinus of adaxial lobes, lobes: abaxial spreading, adaxial reflexed-spreading, 3–5 mm, glabrous externally;

proximal anthers parallel to filaments, distal perpendicular or oblique to filaments, pollen sacs 0.8–1.5 mm;

style exserted, 3–5 mm.
Capsules

globular, 4–6 mm.

obovoid, 4–6(–7) mm.
Seeds

black, 0.5–0.8 mm.

tan to pale brown, 0.8–1 mm.
2n

= 26.

Agalinis pulchella

Agalinis viridis
Phenology Flowering Sep–early Oct. Flowering late Aug–Oct.
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. Mesic to wet areas of prairies, moist to wet savannas, moist roadsides, mesic to wet edges of recently clear-cut forests, dry or wet roadsides.
Elevation 0–100 m. (0–300 ft.) 0–100 m. (0–300 ft.)
Distribution
from FNA
AL; FL; GA; LA; MS; TX
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; AR; LA; MO; MS; OK; TX
[WildflowerSearch map]
[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 viridis is tolerant of mowing and grazing; plants severed at mid stem will flower vigorously from the proximal nodes

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 551. FNA vol. 17, p. 555.
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. plukenetii, A. pulchella, A. purpurea, A. setacea, A. skinneriana, A. strictifolia, A. tenella, A. tenuifolia
Synonyms Gerardia pulcherrima Gerardia viridis
Name authority Pennell: Bull. Torrey Bot. Club 40: 428. (1913) (Small) Pennell: Proc. Acad. Nat. Sci. Philadelphia 73: 521. (1922)
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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