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2d. Pentagramma triangularis subsp. viscosa (Nuttall ex D. C. Eaton) Yatskievych, Windham, & Wollenweber, Amer. Fern J. 80: 15. 1990.
Gymnogramma viscosa Nuttall ex D. C. Eaton, Ferns N. Amer. 2: 16. 1879; Pityrogramma triangularis (Kaulfuss) Maxon var. viscosa (Nuttall ex D. C. Eaton) Weatherby; P. viscosa (Nuttall ex D. C. Eaton) Maxon
Petiole sometimes viscid-glandular. Blades thick and leathery, abaxially densely white-farinose and viscid-glandular, adaxially viscid-glandular. Distal pinnae mostly entire. Proximal basiscopic lobes of basal pinnae entire to undulate or crenate. 2 n = 60.
Chaparral, pine and oak woodlands; 50--500 m; largely coastal; Calif.; Mexico in Baja California.
Pentagramma triangularis subsp. viscosa was said to introgress with P . triangularis subsp. triangularis by K. S. Alt and V. Grant (1960), who noted both diploid and tetraploid plants of intermediate morphology at some sites where these two occur together.
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| 1 (1) |
Leaves viscid-glandular adaxially; distal pinnae mostly entire; proximal basiscopic lobes of basal pinnae entire to undulate or crenate. 2d. Pentagramma triangularis subsp. viscosa |
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(1) |
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Leaves glabrous or with scattered yellowish capitate glands adaxially, not viscid-glandular; distal pinnae mostly regularly lobed; proximal basiscopic lobes of basal pinnae pinnatifid, often deeply so. |
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(2) |
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| 2 (2) |
Leaves with scattered yellowish, capitate, nonfarinose glands adaxially, white-farinose abaxially. 2a. Pentagramma triangularis subsp. maxonii |
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(2) |
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Leaves glabrous adaxially, yellow- or white-farinose abaxially. |
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(3) |
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| 3 (3) |
Farina light to bright yellow. 2c. Pentagramma triangularis subsp. triangularis |
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(3) |
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Farina white. 2b. Pentagramma triangularis subsp. semipallida |
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(1) |
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