Trinia glauca (L) Dumort. Honewort
NOMENCLATURE
Trinia : Named after Karl Bernhard Trinius, (1778-1844) Russian botanist.
glauca: bluish green colour.
PREVIOUS NAMES : T. vulgaris (D.C.) Apinella glauca (L) Caruel.
OTHER NAMES : Honeywort.
BOTANICAL DESCRIPTION
TYPE : glabourous, glaucous, dioecious biennial or perennial. Always monocarpic. Hs.
STEMS : solid, grooved, remains of petioles at the base. Much
branched, spreading at a wide angle. HEIGHT : 5-20cm
UMBELS : compound. Male 1cm diam, flat topped. 4-8 smooth, subequal rays 5-10mm.
Female similar but very unequal rays up to 3 cm. Peduncle > than rays.
MALE PLANTS: dense partial umbels with numerous pedicellate firs.
FEMALE PLANTS: Partial umbels lax, a few long-pedicellate flrs.
LEAVES: lower 2-3 pinnate, segments 5-15mm, linear, acute, with cartilaginous
apex. Petiole slender, sheathing below. Upper smaller, < divided. Cotyledons
tapered at the base, no petiole.
BRACTS : 0-1, 3-f id. Bracteoles: 0 to 3, 2-3 fid.
FLOWERS: White. Styles form stylopodium. Fl. 5-6.
FRUIT : 3mm, ovoid, laterally compressed, smooth. Commisure narrow. Mericarps
with prominent broad ridges. Carpophore present. Vittae: 5 large within the ridges
& 4 small between the ridges. Styles 2-3 x > than stylopodium, recurved and
appressed. Stigma capitate. 2n=18*
HABITAT: dry grassland. Dry limestone soil.
DISTRIBUTION: native. Local S. Dev, N. Som. & Bristol. C.& S.
Europe, N. to S.England. SW. Asia.
