|
branchlet |
|
STRUCTURE |
|
A branch of the highest or ultimate order. |
|
prolate |
|
plane shape |
|
Symmetrically elongate parallel to the developmental or polar axis. |
|
hemiepiphytic |
|
habit |
plant |
Partially epiphytic; rooted in the ground but with stems growing upon and supported mainly by other plants. |
|
cap cell |
|
STRUCTURE |
|
The single cell, or one of the several cells, forming the uppermost (distal) portion of an antheridial wall. |
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caducous |
|
duration |
structure |
Deciduous upon or immediately after emergence, with little or no evident senescence beforehand. |
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ribbed 2 |
|
solid shape |
|
Having two or more prominent, elongate, relatively narrow, essentially parallel protrusions that extend over all or most of its length or circumference. |
|
homogamous 1 |
|
maturation |
bisexual flower |
Having the androecium and gynoecium become functionally mature concurrently. |
|
ridge |
|
FEATURE |
|
A very narrow, elongate, relatively low protrusion; esp. on fruits in Apiaceae (Umbelliferae). |
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homogamous 2 |
|
reproduction |
plant, inflorescence |
Having flowers that do not differ in sexual constitution. |
|
digamous |
|
reproduction |
inflorescence |
Bearing flowers of two differing sexual constitutions; esp. in Asteraceae (Compositae). |
|
internode |
|
STRUCTURE |
|
Any portion of a stem between two successive nodes. |
|
indusium pl. indusia |
|
STRUCTURE |
|
A protective membrane that is an outgrowth from the epidermis and covers a sorus during its maturation; in Polypodiophyta. |
|
laevigate 1 |
|
relief |
|
Very smooth. |
|
semicircular |
|
arrangement |
bundle scars |
Forming an incomplete circle, like the letter C. |
|
eusporangiate |
|
reproduction |
|
Having relatively large sporangia each of which develops from a group of initial cells that, by periclinal divisions, give rise to an outer layer of primary cells and an inner layer of sporogenous cells; in Psilotophyta, Lycopodiophyta, Equisetophyta, and some Polypodiophyta. |
|
divaricate |
|
arrangement |
|
Strongly divergent. |
|
solitary 1 |
|
arrangement |
|
Disposed singly, each remote from any others. |
|
simple-craspedodromous |
|
venation |
|
Having a midvein that branches to either side along the length of the lamina, the secondary veins and their branches all running toward and terminating at the margin. |
|
spinulose |
|
architecture |
|
Finely spinose. |
|
anchoring |
|
habit |
trichome |
Serving as a means of attachment to some external support. |
|
apotropous |
|
orientation |
ovule |
Anatropous but the whole recurved such that the raphe (adnate portion of the funiculus) faces the ovary wall (placenta) and the ovule is parallel to it, the micropyle facing the free basal portion of the funiculus. |
|
germination 1 |
|
CHARACTER |
|
The process wherein a dormant embryo resumes active metabolism and growth, the primary root and shoot emerging from the seed coat, the young sporophyte thereupon entering the seedling stage. |
|
oblate |
|
solid shape |
|
Symmetrically elongate and broader than long perpendicular to the developmental or polar axis. |
|
contiguous |
|
arrangement |
|
Touching one another. |
|
node |
|
STRUCTURE |
|
One of the evident sectors of a stem that occur sequentially along its length and from which leaves (megaphylls) and lateral branches arise exogenously. The anatomy of nodes differs from, but is not abruptly distinct longitudinally from, that of the intervening sectors (internodes), with which it is smoothly confluent and from which is distinguished by the lateral transit and egress of vascular traces interconnecting the stem and the leaves and branches that it bears. |
