Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
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CAPRIFOLIACEAE

HONEYSUCKLE FAMILY

Lauramay T. Dempster

Subshrub, shrub, vine, or small tree
Leaves opposite, simple or compound; stipules generally 0
Flower: calyx tube fused to ovary, limb generally 5-lobed; corolla radial or bilateral, rotate to cylindric, generally 5-lobed; stamens generally 5, epipetalous, alternate corolla lobes; ovary inferior, 1–5-chambered, style l
Fruit: berry, drupe, or capsule
Genera in family: ± 12 genera, 450 species: especially n temp
Recent taxonomic note: Recently treated to include Valerianaceae (and Dispaceae); Sambucus, Viburnum recently treated in Adoxaceae

LONICERA

HONEYSUCKLE

Shrub, erect or twining
Leaves simple, entire, short-petioled; 1–2 pairs beneath inflorescence often fused around stem
Inflorescence: spikes, interrupted, at ends of branches, or flowers paired on axillary peduncles and subtended by 0–2 sets of bracts
Flower: calyx-limb 0 or generally 5-toothed, generally persistent; corolla 5-lobed, ± radial or strongly 2-lipped (4 upper lobes, 1 lower), tube pouched at base; ovary chambers 2–3
Fruit: berry, generally round
Species in genus: ± 200 species: temp, subtropical North America, Eur, Asia, n Africa
Etymology: (Adam Lonitzer, German herbalist, 16th century)
Reference: [Rehder 1903 Rep Missouri Bot Gard 14:27–231]
2 collections (Del Norte Co., Eldorado Co.) have purplish, apparently sterile, variously distorted flowers with long, slender ovary/hypanthium; probably alien (key 7.).

Introduced

L. japonica Thunb.

JAPANESE HONEYSUCKLE

Vine, climbing; herbage glabrous or soft-hairy
Leaf generally 3–8 cm; blade oblong to ovate, base rounded, tip ± acute
Inflorescence: flowers paired, each pair subtended by 2 leaf-like bracts and 4 ± round bractlets that are ± 1/2 ovary length; peduncles short, axillary
Flower: corolla 25–40 mm, strongly 2-lipped, white turning yellow, often tinged purplish, tube hairy; stamens, style and stigma exserted
Fruit black
Chromosomes: 2n=18
Ecology: Disturbed places
Elevation: generally < 1000 m.
Bioregional distribution: California
Distribution outside California: abundant in se US; native to Asia
Flowering time: Spring and summer
Sporadic escape from cultivated.

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