Blackstar Cyn. Rd., Irvine, CA. 4-8-12 |
Leafy Buckwheat Eriogonum fasciculatum ssp. foliolosum An erect, rounded, open, 2-5 ft. tall shrub, common and widespread on dry slopes in coastal sage scrub, less common in chaparral; mountain foothills, and Santa Ana Mountains (Roberts). It is the most abundant Eriogonum in our area and is the most important native source of honey in California. It is one of the earliest plants to recolonize after a fire. This species is octoploid, (n=80 rather that 40), and is thought to be "the product of ancient hybrization involving the coastal var. fasciculatum and the desert var.polifolium" (James L. Reveal, U of Maryland). There is much overlap between this variant and the polifolium in some areas. This variant has been widely cultivated in California and has become established in some areas from roadside planting (JM2). Major difference from ssp. fasciculatum is that the upper surface of the leaves, outer surface of the calyx and the involucres are pubescent in foliosum (DeRuff). Flowering: all year (JM2). Polygonaceae; Subfamily Eriogonoideae Back to Polygonaceae of Orange County, California |
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Six-lobed calyx white or pinkish; no petals, exserted stamens. Peter's Canyon Regional Park, Irvine, CA. 5-21-06. © Joan Avise. |
Flower parts (calyx and involucres) are hairy. Flower clusters are open and mostly flat-topped. 2-1-12. © Joan Avise. |
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It differs from E.f. fasciculatum in that the leaves are darker green or grayish and are hairy on both surfaces (densely white woolly underneath, more sparsely above). Leaf margins are tightly rolled under. 2-1-12. © Joan Avise. |
2-1-12. © Joan Avise. |
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Blackstar Cyn. Rd., Irvine, CA. 4-8-12. © Joan Avise. |
Peter's Canyon Regional Park, Irvine, CA. 5-21-06. © Joan Avise. |
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Blackstar Cyn. Rd., Irvine, CA. 4-8-12. © Joan Avise. |
Blackstar Cyn. Rd., Irvine, CA. 4-8-12. © Joan Avise. |
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Peter's Canyon Regional Park, Irvine, CA. 5-21-06. © Joan Avise. |
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Associated Insects | |||
Buckwheat is a nectar source for numerous butterflies, bees and other insects. It is also the larval foodplant for the following butterflies: | |||
Bernardino Blue, Euphilotes bernardino |
Gray Hairstreak, Strymon melinus |
Behr's Metalmark, Apodemia virgulti |
Bramble Hairstreak, Callophrys perplexa |