Boykinia intermedia

(Piper) G. N. Jones

Bot. Surv. Olympic Penins., 168. 1936,.

Basionym: Boykinia major var. intermedia Piper Erythea 7: 172. 1899
Synonyms: Therofon intermedium (Piper) A. Heller Therofon major subsp. intermedium (Piper) Piper
Treatment appears in FNA Volume 8. Treatment on page 127. Mentioned on page 125, 126.

Plants stoloniferous; rhizomes proliferating above ground. Flowering-stems 25–70 cm. Basal leaves: petiole 3–15 cm; blade reniform, 3–7-lobed to 1/2–3/4 its length, (3–) 5–11 × (5–) 8–14 cm, margins 2–3-times dentate. Cauline leaves: stipules (2–) 4–9 mm, usually foliaceous, smaller ones fringed with brown hairs. Inflorescences ± pyramidal, (5–) 9–13-flowered per primary branch. Pedicels densely stipitate-glandular. Flowers: hypanthium campanulate to turbinate, free portion 0.8–1.3 mm, densely stipitate-glandular; sepals erect, lanceolate, (1.5–) 2–3 mm, apex acute; petals spatulate to ovate, 3–7 × 1–3 mm, base tapered to claw, margins plane; nectary greenish yellow; stamens 1.3–1.8 mm; ovary subinferior. Capsules ovoid, turbinate, or urceolate. Seeds usually black, tuberculate. 2n = 28.


Phenology: Flowering summer.
Habitat: Temperate rainforest, margins of lakes, ponds, and watercourses
Elevation: 10-700 m

Discussion

Of conservation concern.

Specimens considered to represent Boykinia intermedia from northern Idaho (R. Bacigalupi 1952; F. D. Johnson and R. Steele 1978) were regarded as B. major by R. J. Gornall and B. A. Bohm (1985); they require further study. Boykinia intermedia differs from that species in its stoloniferous habit, smaller stipules, a campanulate rather than saucer-shaped hypanthium, a shorter free-hypanthium, petals tapered rather than contracted abruptly to a claw and with plane rather than undulate margins, a more pyramidal inflorescence, and an absence of polymethylated flavonols.

Selected References

None.

Lower Taxa

None.
... more about "Boykinia intermedia"
palmate +  and grooved +
epigynous +, perigynous +  and hypogynous +
Richard J. Gornall +
(Piper) G. N. Jones +
tapered +
Boykinia major var. intermedia +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
5 cm50 mm <br />0.05 m <br /> (11 cm110 mm <br />0.11 m <br />) +
dentate +, serrate +  and entire +
glandular-ciliate +  and ciliate +
3-7-lobed +  and reniform +
8cm +  and 14cm +
bracteate +  and (3-)5-20(-30)-flowered +
urceolate +, turbinate +  and ovoid +
3-carpellate +  and 2-carpellate +
Oreg. +  and Wash. +
10-700 m +
linear +  and subulate +
unisexual +  and bisexual +
25 cm250 mm <br />0.25 m <br /> (70 cm700 mm <br />0.7 m <br />) +
2-3(-4)-beaked +  and folliclelike +
Temperate rainforest, margins of lakes, ponds, and watercourses +
multicellular +
free +  and adnate +
(5-)9-13-flowered +
opposite +  and alternate +
greenish yellow +
subinferior +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
crassinucellate +, unitegmic +  and bitegmic +
stipitate-glandular +
epigynous +, perigynous +  and hypogynous +
distinct +
0.3 cm3 mm <br />0.003 m <br /> (?) +  and 0.7 cm7 mm <br />0.007 m <br /> (?) +
Spatulate (?) +  and Ovate (?) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
peltate +  and jointed +
stipitate-glandular +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Flowering summer. +
unequal +
stipitate-glandular +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
Bot. Surv. Olympic Penins., +
proliferating +
spiny +  and ribbed +
straight +
tuberculate +
ellipsoid +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
green +  and purple +
distinct +
lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
unbranched +  and branched +
persistent +
horizontal +  and erect +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (?) +  and 0.9 cm9 mm <br />0.009 m <br /> (?) +
connate +  and distinct +
stipitate-glandular +
Therofon intermedium +  and Therofon major subsp. intermedium +
Boykinia intermedia +
Boykinia +
species +
crenate +  and serrate +
annual +, biennial +  and perennial +