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Brandegee's clover

clammy clover, creek clover

Habit Herbs perennial, 5–15 cm, glabrous. Herbs annual, 2–100 cm, resinous stipitate-glandular.
Stems

cespitose, short-branched.

erect or ascending, branched.

Leaves

palmate;

stipules broadly lanceolate, 1–1.5 cm, margins entire, apex acute-acuminate;

petiole 0.6–1.2 cm;

petiolules to 0.5 mm;

leaflets 3, blades ovate, oblong-elliptic, or elliptic, 0.8–3 × 0.4–1.5 cm, base cuneate, veins moderately thickened, margins entire or faintly serrate, apex acute to rounded or minutely apiculate, surfaces glabrous.

palmate;

stipules ovate, 1–1.5 cm, sheathing, margins deeply lacerate, apex acuminate;

petiole 1.5–10 cm;

petiolules to 0.5 mm;

leaflets 3, blades elliptic, lanceolate, oblanceolate, rhombic, or obovate, 1.5–4 × 0.3–1.7 cm, base cuneate, veins thickened, margins coarsely spinulose-serrate, apex acute, mucronate, surfaces glandular.

Inflorescences

terminal, 4–15-flowered, ovoid-ellipsoid, 2.5–4 × 2.2–3 cm, rachis prolonged ca. 10 mm beyond distalmost flower;

involucres absent.

axillary or terminal, 10–50-flowered, globose or ovoid, 1–3.5 × 1–3 cm;

involucres flattened or bowl-shaped, 3–8 mm, when folded, not hiding flowers except proximally, incised 1/4–1/3 their length.

Peduncles

6–20 cm.

3–15 cm, glandular.

Pedicels

strongly reflexed, 1–2 mm;

bracteoles linear, minute.

erect, 1 mm;

bracteoles absent.

Flowers

15–18 mm;

calyx whitish, campanulate, 7–10 mm, sparsely pubescent, veins 10, tube 4–5 mm, lobes subequal, longer than tube, narrowly triangular, acuminate, orifice open;

corolla purple to magenta, 15–18 mm, banner broadly ovate, 15–17 × 7–9 mm, apex obtuse or retuse.

13–20 mm;

calyx tubular-campanulate, slit between adaxial lobes, 10–13 mm, glandular, veins 20+, tube 5–7 mm, lobes unequal, narrowly triangular or lanceolate-subulate, usually entire, rarely 3-fid or shouldered below apex, orifice open;

corolla white or pale pinkish with dark purple spot, 10–18 mm, banner broadly elliptic, 10–18 × 2–4 mm, apex blunt.

Legumes

oblong, 6.5–7 mm.

obovoid, 3.5–4 mm.

Seeds

1–3, yellow and red, flattened ovoid, 2–2.5 mm, smooth.

1 or 2, brown, mottled, ellipsoid or mitten-shaped, 2.5 mm, smooth.

2n

= 16.

= 16.

Trifolium brandegeei

Trifolium obtusiflorum

Phenology Flowering Jul–Aug. Flowering Apr–Jul.
Habitat Open montane forests and subalpine areas. Moist swales, creek bottoms.
Elevation 3500–3700 m. (11500–12100 ft.) 0–1600 m. (0–5200 ft.)
Distribution
from FNA
CO; NM
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; OR; Mexico (Baja California, Sinaloa)
[WildflowerSearch map]
[BONAP county map]
Discussion

A close relationship between Trifolium brandegeei and T. parryi was hypothesized by J. M. Gillett (1965); this has not been borne out by flavonoid chemosystematics (E. V. Parups et al. 1966) or DNA analyses (N. W. Ellison et al. 2006).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Trifolium obtusiflorum is much less common than the similar T. willdenovii, occurring in moist areas in cismontane California and north into Oregon (W. L. Jepson [1923–1925]). It is easy to distinguish from T. willdenovii by its glandularity, which causes fresh specimens to be sticky to the touch.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Trifolium Fabaceae > subfam. Faboideae > Trifolium
Sibling taxa
T. albopurpureum, T. alexandrinum, T. amoenum, T. amphianthum, T. andersonii, T. andinum, T. angustifolium, T. appendiculatum, T. arvense, T. attenuatum, T. aureum, T. barbigerum, T. barnebyi, T. beckwithii, T. bejariense, T. bifidum, T. bolanderi, T. breweri, T. buckwestiorum, T. calcaricum, T. campestre, T. carolinianum, T. cernuum, T. ciliolatum, T. columbinum, T. cyathiferum, T. dasyphyllum, T. dedeckerae, T. depauperatum, T. dichotomum, T. douglasii, T. dubium, T. echinatum, T. eriocephalum, T. fragiferum, T. friscanum, T. fucatum, T. glomeratum, T. gracilentum, T. grayi, T. gymnocarpon, T. haydenii, T. hirtum, T. howellii, T. hybridum, T. hydrophilum, T. incarnatum, T. jokerstii, T. kentuckiense, T. kingii, T. lappaceum, T. latifolium, T. leibergii, T. lemmonii, T. longipes, T. lupinaster, T. macilentum, T. macraei, T. macrocephalum, T. medium, T. microcephalum, T. microdon, T. monanthum, T. mucronatum, T. nanum, T. nigrescens, T. obtusiflorum, T. oliganthum, T. ornithopodioides, T. owyheense, T. palmeri, T. parryi, T. pinetorum, T. piorkowskii, T. plumosum, T. polyodon, T. pratense, T. productum, T. reflexum, T. repens, T. resupinatum, T. retusum, T. rollinsii, T. siskiyouense, T. sonorense, T. stoloniferum, T. striatum, T. subterraneum, T. suffocatum, T. thompsonii, T. tomentosum, T. trichocalyx, T. variegatum, T. vesiculosum, T. virginicum, T. willdenovii, T. wormskioldii
T. albopurpureum, T. alexandrinum, T. amoenum, T. amphianthum, T. andersonii, T. andinum, T. angustifolium, T. appendiculatum, T. arvense, T. attenuatum, T. aureum, T. barbigerum, T. barnebyi, T. beckwithii, T. bejariense, T. bifidum, T. bolanderi, T. brandegeei, T. breweri, T. buckwestiorum, T. calcaricum, T. campestre, T. carolinianum, T. cernuum, T. ciliolatum, T. columbinum, T. cyathiferum, T. dasyphyllum, T. dedeckerae, T. depauperatum, T. dichotomum, T. douglasii, T. dubium, T. echinatum, T. eriocephalum, T. fragiferum, T. friscanum, T. fucatum, T. glomeratum, T. gracilentum, T. grayi, T. gymnocarpon, T. haydenii, T. hirtum, T. howellii, T. hybridum, T. hydrophilum, T. incarnatum, T. jokerstii, T. kentuckiense, T. kingii, T. lappaceum, T. latifolium, T. leibergii, T. lemmonii, T. longipes, T. lupinaster, T. macilentum, T. macraei, T. macrocephalum, T. medium, T. microcephalum, T. microdon, T. monanthum, T. mucronatum, T. nanum, T. nigrescens, T. oliganthum, T. ornithopodioides, T. owyheense, T. palmeri, T. parryi, T. pinetorum, T. piorkowskii, T. plumosum, T. polyodon, T. pratense, T. productum, T. reflexum, T. repens, T. resupinatum, T. retusum, T. rollinsii, T. siskiyouense, T. sonorense, T. stoloniferum, T. striatum, T. subterraneum, T. suffocatum, T. thompsonii, T. tomentosum, T. trichocalyx, T. variegatum, T. vesiculosum, T. virginicum, T. willdenovii, T. wormskioldii
Synonyms T. majus, T. roscidum, T. tridentatum var. obtusiflorum
Name authority S. Watson: Proc. Amer. Acad. Arts 11: 130. (1876) — (as brandegei) Hooker: Bot. Beechey Voy., 331. (1838)
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