Flora of North America species comparison

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Agalinis laxa

long-pedicelled false foxglove, twoline false foxglove
Stems

simple or branched, 20–100 cm;

branches widely and laxly ascending, terete proximally, terete or bluntly angular-ridged distally, glabrous or scabridulous.
Leaves

spreading;

blade filiform, (7–)10–30 x 0.3–1 mm, not fleshy, margins entire, finely scabrous or nearly glabrous, adaxial surface finely scabrous or glabrate;

axillary fascicles absent.
Inflorescences

racemose-paniculate, flowers 1 per node, some flowers pseudoterminal;

bracts much shorter than pedicels.
Pedicels

widely spreading, 15–40(–47) mm, glabrous.
Flowers

calyx narrowly campanulate, tube 2.5–4 mm, glabrous, lobes deltate-subulate, 0.3–1 mm;

corolla pale pink to pink, with 2 yellow lines and red spots in abaxial throat, 8–16.5 mm, throat pilose externally and villous within across bases and sinus of adaxial lobes, lobes: abaxial spreading, adaxial reflexed-spreading, 2.7–6.4(–7) mm, abaxial pilose externally, adaxial glabrous externally;

proximal anthers parallel to filaments, distal perpendicular to filaments, pollen sacs 1.3–2.8 mm;

style exserted, 5–12 mm.
Capsules

globular-ovoid, 3.7–5 mm.
Seeds

black, 0.4–0.7 mm.
2n

= 28.

Agalinis laxa
Phenology Flowering Sep–Oct.
Habitat Dry to mesic pinelands, pine and oak savannas, sand hills, openings in saw palmetto flatwoods, sandy soils.
Elevation 0–60 m. (0–200 ft.)
Distribution
from FNA
FL; GA; SC
[BONAP county map]
Discussion

Agalinis laxa occurs in northeastern South Carolina and is expected to occur in southeastern North Carolina; it is most common near the coast in Georgia and northeastern Florida but is found sporadically on the coastal plain as far south as Hernando County, Florida. In the field, A. laxa is most easily confused with A. tenella; both have laxly spreading branches, widely spaced leaves, long pedicels subtended by much shorter bracts, and inflorescences with some pseudoterminal flowers. Agalinis laxa is most easily differentiated from A. tenella by pedicels to 40 mm in fruit, shorter and narrower corollas, straight corolla throats, pilose abaxial corolla lobes, and black seeds. Agalinis tenella has larger gibbous corollas, glabrous abaxial corolla lobes, and golden yellow seeds.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 546.
Parent taxa 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. 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 laxa
Name authority Pennell: Bull. Torrey Bot. Club 40: 431. (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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