sellaeform |
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solid shape |
|
See selliform. |
basiramous |
|
architecture |
axis |
Branching at or near the base. See also basicauliramous. |
simple 1 |
|
architecture |
|
Externally unitary and comprising only one basic morphological unit; not compound in either sense of that term. |
leaf scar |
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FEATURE |
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A scar on a twig or stem due to abscission of a megaphyll; having an outline like that of a transverse section through the base of the petiole, sheath, or blade that was inserted there. |
amphibious |
|
habit |
plant |
Able to live in either aquatic or terrestrial habitats; e.g., adapted to periodic inundation on floodplains. |
adnate |
|
fusion |
dissimilar structure(s) |
Intimately fused with or to one or more other dissimilar structures, the connection(s) with strong histological continuity. See also connate. |
calyptrate |
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architecture |
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Having or constituting a calyptra. |
oblate |
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plane shape |
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Symmetrically elongate and broader than long perpendicular to the developmental or polar axis. |
anisopetalous |
|
architecture |
flower, perianth, corolla |
Having petals unequal in size and/or shape. |
tertiary vein |
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STRUCTURE |
|
A strand belonging to the third order of vasculature in a leaf or other basically laminar structure, except when that is the ultimate order (consisting of veinlets); branching from a primary or secondary vein. See also costa, lateral vein, primary vein, rib, secondary vein, veinlet. |
disc 1 var. disk |
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STRUCTURE |
|
Any distinct, annular to discoid structure produced from or borne upon a floral receptacle between or basal to any of the sets of floral organs; usually fleshy, often nectariferous. |
endocarp |
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STRUCTURE |
|
The innermost tissue layer of a pericarp. |
eccentric |
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position |
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Having a center or axis of symmetry not coincident with that of the context of reference. |
connivent |
|
arrangement |
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Converging and distally contiguous; esp. arcuate stamens with anthers contiguous. |
episepalous |
|
insertion |
|
Upon the sepals, or partially adnate thereto and apparently arising therefrom. |
commissure |
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FEATURE |
|
Precisely, the joint or common boundary between the facing surfaces of two coherent or mutually appressed structures such as mericarps or stigmas, but traditionally (though imprecisely) applied to such a facing surface itself. |
phyllopodium pl. phyllopodia |
|
STRUCTURE |
|
A stem-like axis composed of fused leaf bases; esp. in Arecaceae (Palmae), Musaceae. |
first glume |
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STRUCTURE |
|
The lower (proximal) or sometimes solitary small bract inserted at the base of a grass (Poaceae) spikelet, the second glume, when present, inserted immediately above (distal to) it. |
pericolporate |
|
architecture |
pollen grain |
Pericolpate, each groove containing a pore. |
polyadal |
|
arrangement |
pollen |
Shed in groups of more than four, each group comprising grains from two or more original tetrads, the latter intact or not. |
vallecular |
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position |
|
In or otherwise directly associated with the valleculae; esp. in fruits of Apiaceae (Umbelliferae). |
pseudoterminal |
|
insertion |
|
Only apparently terminal; originally subapical but displaced toward the apex by differential growth during development. |
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. |
fusion |
|
CHARACTER |
|
Physical connection of equivalent or dissimilar structural entities (as recognized on evolutionary, morphological, anatomical, ontogenetic, and/or topological grounds). Terms that denote the interconnection of equivalent structures are predicated on a single collective subject and suffice in themselves to describe the condition; e.g., "sepals connate." However, those that denote the connection of dissimilar structures require explicit notation of each type of structure involved, in either a compound-subject construction or else a single-subject/object-of-preposition construction; e.g., "stamens and corolla adnate" or "stamens adnate to corolla." Qualifying detail is sometimes appropriate; e.g., "filaments connate basally," "filaments adnate to the petals over their lower halves." |