Flora of North America species comparison

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Aureolaria

false foxglove, yellow false foxglove
Habit Herbs, annual or perennial; hemiparasitic, caudex knotted.
Stems

erect, not fleshy, glabrous, sparsely to densely puberulent, densely villous, or glandular-pubescent.
Leaves

basal and cauline, opposite;

petiole present;

blade leathery, not fleshy, margins entire, pinnatifid, or 2-pinnatifid.
Inflorescences

terminal, loose racemes;

bracts present.
Pedicels

present;

bracteoles absent.
Flowers

sepals 5, calyx radially symmetric, campanulate or turbinate, lobes linear to deltate, sometimes lanceolate;

petals 5, corolla yellow, bilabiate, campanulate, abaxial lobes 3, adaxial 2;

stamens 4, didynamous, filaments glabrous or ciliate, anthers villous;

staminode 0;

ovary 2-locular, placentation axile;

stigma truncate.
Capsules

dehiscence loculicidal.
Seeds

300–500, brown to blackish, ovoid to deltoid, wings present (absent in A. pedicularia).
x

= 14.

Aureolaria
Distribution
from USDA
e North America; n Mexico; c North America
[BONAP county map]
Discussion

Species 8 (7 in the flora).

Molecular phylogenetic analysis supports a close relationship of Aureolaria with Agalinis, Esterhazya J. C. Mikan, and Seymeria (J. R. Bennett and S. Mathews 2006). Further evidence for these relationships is similarities in floral morphology among these genera.

Aureolaria greggii (S. Watson) Pennell occurs broadly throughout northern Mexico.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Calyx lobe margins crenate or pinnatifid; plants annual.
→ 2
2. Leaf blade margins 2-pinnatifid, sometimes undivided or basal leaves less deeply incised; calyx tubes campanulate; corolla tubes floccose.
A. pectinata
2. Leaf blade margins pinnatifid or 2-pinnatifid (first sinus deeper than second when both present); calyx tubes turbinate; corolla tubes glabrous or sparsely pubescent.
A. pedicularia
1. Calyx lobe margins entire; plants perennial.
→ 3
3. Stems and leaf blade surfaces sparsely to densely brown-pubescent; capsules densely pubescent.
A. virginica
3. Stems and leaf blade surfaces glabrous, puberulent, or white-puberulent; capsules glabrous.
→ 4
4. Leaf blade margins proximally serrate to pinnatifid, entire on distal 1/4–1/.
A. patula
4. Leaf blade margins entire, serrate, or shallowly to deeply pinnatifid.
→ 5
5. Stems and leaf blade surfaces puberulent or white-puberulent.
A. grandiflora
5. Stems and leaf blade surfaces glabrous.
→ 6
6. Leaf blade margins entire or serrate, rarely proximal leaves pinnatifid.
A. levigata
6. Leaf blade margins pinnatifid or basal leaves 2-pinnatifid, rarely entire.
A. flava
Source FNA vol. 17, p. 555. Author: Jeffery J. Morawetz.
Parent taxa Orobanchaceae
Subordinate taxa
A. flava, A. grandiflora, A. levigata, A. patula, A. pectinata, A. pedicularia, A. virginica
Name authority Rafinesque: New Fl. 2: 58. (1837)
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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