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Systematics Families
Cornales/Ericales
10
Plant Sciences
Not Applicable
10/12/2005

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Term
CORNALES
Definition
Cornus, Alangium, camptotheca, nyssa, davidia, diplopanax, mastixia, curtisia, hydrangeaceae, loasaceae, grubbiaceae, hydrostachyaceae
Term
CORNACEAE: cornus
Definition
60 spp. Hermaphroditic trees, shurbs, rarely herbs. 4- or 5- merous fls, inferior ovary, 2-carpellate ovaries, epigynous disk, drupaceous fruits. germination valve in fruit stone
Term
CORNACEAE: genera
Definition
*Alangium* 19 spp. tropical *Davidia* dove tree, 1 sp, China *Camptotheca* tree of joy 1 sp. Chia, Fruit samaroid, different from others (drupaceous) *Nyssa* Sour gum 7-10 spp, E. Asia, E. N. Am. *Diplopanax* a living fossil 1 sp, big tree, China and N. Vietnam, thought extinct 5 mil. years ago *Mastixia* 13 spp. SE Asia Sharing two armed unicellular hairs with cornus, sister to dogwoods
Term
CORNACEAE: CORNUS
Definition
4 groups of Cornus, all have:
4-merous flowers, 4-sepals connate 4-petals distinct, in compound cyme, head, or umbellate, 2-carpels fused, inferior ovary, drupe, opp. simp. lvs w/ two-armed appressed hairs on
surface.
Ca4, Co4 A4 G:2:1
*economic importance* ornamentals, fruits as medicines & industrial oils
Term
ERICALES
Definition
25 families, 9450 spp. Major families: Actinididaceae (kiwi), chethraceae, cyrillaceae, ebenacae, ericaceae, lecythidaceae, myrinaceae, polemoniaceae, primulaceae, sarraceniaceae, sapotaceae, styracaceae, ternstroemiaceae, theaceae, theophrastaceae
Term
ERICACEAE: heath family
diagnostics:
Definition
trees, shrubs, lianas, herbs w/o clorophyll, associate with mycorrhizal fungi.
LVS variable, alt, opp, whorl, simple, entire or serrate, estipulate.
Flowers perfect, mostly urceolate corolla, tubular or funnelform. capsule berry or drupe. anthers inverted, 2 or 1 locular, usually openeing by 2 apical pores, w/2 awns or apex narrowed forming tubules. style 1, hollow, internally fluted, fruit a septicidal or loculicidal capsule, berry, 1 or several pitted drupe.
Term
ERICACEAE: Rhododendroid clade
Definition
protective bracts at the inflo. base, septicidal capsules, usu showy, more or less bell shaped, bilateral flowers, non appendaged anthers
Term
ERICACEAE: Phyllodocoids clade
Definition
septicidal capsules, radial flower
Term
ERICACEAE: Bricoid clade
Definition
persistent corolla, all related to wind pollinated empetroids
Term
ERICACEAE: vaccinoid clade
Definition
inferior ovaries, plus lyonia, pieris, leucothoe, gaultheria, andromeda.. with superior ovaries, usu. urceolate corolla
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