porous |
|
porosity |
|
Having vessels present. |
veined |
|
architecture |
|
Having one or more orders of evident vasculature. |
rachis 2 var. rhachis |
|
STRUCTURE |
|
A main or first-order axis of an inflorescence. |
gynomonoecious |
|
reproduction |
taxon |
Having all plants with both bisexual flowers and pistillate ones. |
pulvinus pl. pulvini |
|
STRUCTURE |
|
A short, cushion-like swelling at the junction of stem and leaf or of inflorescence axis and branch. |
revolute 1 |
|
margin |
|
Rolled inward abaxially. |
reclinate |
|
vernation |
|
Each with its blade oriented downward and parallel to the proximal portion of its distally recurved petiole. |
imperfect |
|
architecture |
flower |
Having either stamens or pistils absent or non-functional, thus unisexual. |
alete |
|
architecture |
spore |
Lacking a tetrad scar (surficial ridge or angle resulting from coherence with others produced from the same spore mother cell). |
involucrate 2 |
|
architecture |
capitulum (head) |
Having an involucre. |
infrapetiolar |
|
position |
bud |
Axillary and surrounded by the petiole base at maturity. |
septate 2 |
|
architecture |
trichome |
Unicellular to multicellular with transverse partitions (septa) that are common cell walls (intercellular) and/or intrusions from longitudinal cell walls (intracellular). |
coherent |
|
fusion |
equivalent structures |
Joined superficially, with no significant histological continuity. |
loose 2 |
|
texture |
|
Soft overall, discontinuously and only weakly cohesive. |
andropetalous 1 |
|
architecture |
flower, androecium |
Having petaloid, sterile stamens. |
lineate 1 |
|
coloration |
|
Having very narrow, straight, clear or colored lines that contrast with the ground color. |
sterigma pl. sterigmata |
|
STRUCTURE |
|
A portion of a lamina that is prolonged and adherent to the supporting axis beneath the point of vascular insertion. |
convolute 2 |
|
arrangement |
cotyledons |
Each rolled or folded inward longitudinally, one enveloping the other. |
microgametophyte |
|
PLANT |
|
A gametophyte whose fertile organs (gametangia) are all antheridia. |
archegonium pl. archegonia |
|
STRUCTURE |
|
A female gametangium; a multicellular fertile organ of a mature gametophyte within which female gametes (eggs, ova) are produced and fertilized; having a broad, bulbous base and a narrower distal neck. Technically present but highly reduced and of no descriptive significance in Magnoliophyta. |
cyathiate |
|
architecture |
inflorescence |
Comprising one or more cyathia. |
massula pl. massulae |
|
STRUCTURE |
|
A body of coherent pollen grains, dispersed as a unit; esp. in Asclepiadaceae, Orchidaceae. |
subopposite |
|
arrangement |
|
Alternate but verging on opposite. |
nectar |
|
SUBSTANCE |
|
An aqueous exudate of high sugar content. |
mucilage |
|
substance |
|
A slimy exudate. |