Download Diversity And Classification of Flowering Plants:

Diversity And Classification of
Flowering Plants:
Eudicots
ca. 75% of all angiosperms!
Michael G. Simpson
CARYOPHYLLALES
encompass a traditional group formerly
known as the Centrospermae
(or Caryophyllidae, after Cronquist, 1981,
and Takhtajan, 1999).
Caryophyllales!
Nepenthaceae
Cactaceae
Portulacaceae
Caryophyllaceae
Droseraceae
Polygonaceae
Nyctaginaceae
Polygonaceae - Buckwheat family
(meaning "many knees," from swollen nodes found in some species)
46 genera / 1,100 species.
Leaves simple, spiral, with or without a stipular ocrea
Inflorescence of fasciculate units
Flowers small, actinomorphic
Perianth 3+3 or 5 (quincuncial) tepals connate
Ovary usually 3-carpellate
Ovule single, basal, mostly orthotropous
Fruit a usually 3-sided achene or nutlet
P (3+3) or (5) A 3+3, 8 G (3), superior, hypanthium absent or present.
Polygonaceae - Buckwheat family
The Polygonaceae are typically classified into two subfamilies:
Polygonoideae, with ocrea present
Eriogonoideae, with ocrea absent
Members of the family have a worldwide distribution, especially in the northern temperate
hemisphere.
Economic importance includes edible plants, such as:
Fagopyrum esculentum, buckwheat
Rheum xhybridum, rhubarb
Medicinal plants; timber, charcoal, and tanning plants
Cultivated ornamentals, such as Antigonon leptopus, coral vine, Muelenbeckia, and
Polygonum.
Fagopyrum esculentum
Buckwheat
Rheumxhybridium
Rhubarb
ocrea
Persicaria amphibia WaterSmartweed
Polygonaceae
Rumex crispus CurlyDock
ocrea
Rumex salicifolius WillowDock
ocrea
Aconogonon davisiae Polygonaceae
ocrea
Antigonon leptopus CoralVine
Polygonaceae
Chorizanthe douglasii Douglas’sSpineflower
Polygonaceae
Chorizanthe fimbriata var.fimbriata
FringedSpineflower
Chorizanthe leptotheca
PeninsularSpineflower
Coccoloba diversifolia
Seagrape/PigeonPlum
Polygonaceae
shrub;leavesfasciculate,lineartooblanceolate;marginsrevolute.
Eriogonum fasciculatum CaliforniaBuckwheat
Polygonaceae
Eriogonum fasciculatum CaliforniaBuckwheat Polygonaceae
Eriogonum fasciculatum CaliforniaBuckwheat
VarietiesinCalifornia:
60. Leaf blades narrowly linear to oblanceolate, <= 2 cm, generally strongly clustered; widespread ..... E. fasciculatum
61. Leaves thinly white-tomentose abaxially, glabrous adaxially; flowers, involucres generally glabrous;
plant generally decumbent; Central Coast ..... var. fasciculatum
61' Leaves, flowers, involucres hairy, if ± glabrous then plant of deserts; plant erect to rounded;
California Floristic Province, East of Sierra Nevada, D
62. Leaves light yellow-green, glabrous or ± so adaxially; involucres, flowers glabrous or
occasionally hairy; Desert ..... var. flavoviride
62' Leaves dark green or ± gray, generally hairy adaxially; involucres, flowers hairy;
California Floristic Province, East of Sierra Nevada, D
63. Inflorescence open, mostly cyme-like; leaves densely white-tomentose abaxially, less so to green,
sparsely tomentose adaxially, margins generally tightly rolled under; Central Western California,
Southwestern California, occasionally Northwestern California, Desert ..... var. foliolosum
63' Inflorescence head- to umbel-like (or cyme-like); leaves gray-hairy on both surfaces or densely
gray-tomentose abaxially, gray-hairy adaxially, margins not or occasionally rolled under;
s Sierra Nevada, Inner South Coast Ranges, e South Coast, Transverse Ranges, e Peninsular Ranges,
East of Sierra Nevada, Desert ..... var. polifolium
var.fasciculatum
var.foliolosum
var.polifolium
Eriogonum latifolium SeasideWildBuckwheat
Polygonaceae
Eriogonum saxatile HoaryWildBuckwheat