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disc 2 var. disk |
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STRUCTURE |
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Collectively, the disc florets of a capitulum (head), or the surface presented by them. |
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floating 1 |
|
habit |
plant |
Buoyant and growing entirely at or near the surface of water, not rooted in any substrate. |
|
longitudinal 1 |
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dehiscence |
|
Parallel to the central axis. |
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pseudoaxillary |
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position |
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Only apparently axillary; originally extraaxillary but displaced to the axil by differential growth during development. |
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septal |
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position |
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Upon or otherwise directly associated with the septum or septa. |
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dorsiventral |
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architecture |
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Having structurally distinct abaxial (dorsal) and adaxial (ventral) portions or aspects. |
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aestivation |
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CHARACTER |
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Disposition of perianth (undifferentiated), calyx, or corolla members in the bud. |
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marginal |
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insertion |
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Upon or otherwise directly associated with the margins. |
|
shoot 2 |
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STRUCTURE |
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A vascularized axis that is differentiated into nodes and internodes and that branches exogenously from the former, together with any non-axial structures borne from it. |
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vallecular |
|
insertion |
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In or otherwise directly associated with the valleculae; esp. in fruits of Apiaceae (Umbelliferae). |
|
elaiosome |
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STRUCTURE |
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A fleshy outgrowth from the seed coat (testa) that contains a high proportion of oil, usually attracting ants for dispersal. |
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microphyllous |
|
architecture |
plant |
Bearing microphylls. |
|
isopetalous |
|
architecture |
flower, perianth, corolla |
Having the petals essentially alike in size and shape. |
|
peripheral |
|
position |
|
Upon or otherwise directly associated with the outer surfaces or regions of a three-dimensional structure. Although use of this term in two-dimensional contexts is technically correct, traditionally the term marginal is preferred in such cases. |
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ephemeral |
|
duration |
plant |
Annual with a very short life span; germinating, growing, reproducing, and dying within a brief period of favorable conditions, the entire cycle being completed within a few weeks. |
|
anther |
|
STRUCTURE |
|
The fertile, loculate, pollen-bearing portion of a stamen, containing one, two, or four thecae (pollen sacs), when that portion is differentiated from and borne at the summit of a narrower supporting stalk (filament), or when such differentiation is deemed to have occurred in the evolutionary past with subsequent reduction of the filament (the anther then sessile and constituting the entirety of the stamen). |
|
reproduction |
|
CHARACTER |
|
Type, morphology, disposition, function and/or dissemination of reproductive structures. |
|
symmetric(al) 1 |
|
plane shape |
|
Divisible into essentially equal halves along one or more lines or planes. |
|
course |
|
CHARACTER |
|
Linear pattern of the centerline through the length of an axis or vein. |
|
lacunate |
|
relief |
|
Having relatively large and deep depressions overall. |
|
spikelet |
|
nominative |
inflorescence |
A compound structure belonging to the penultimate subdivisional order of a sedge or grass inflorescence; consisting of one or more florets (each a diminutive flower subtended by specialized bractlets (bracteoles) called scales or glumes in sedges, lemma and palea in grasses), spicately arranged along a common axis (rachilla), the axis and florets together subtended by one or (usually) two bracts (first and second glumes). The spikelet is usually considered to be the basic unit of inflorescence in Cyperaceae and Poaceae (Gramineae). |
|
erose 1 |
|
margin |
|
Having rough, very irregular depressions throughout. |
|
aquatic |
|
habit |
plant |
Growing in water. |
|
gynandrous |
|
architecture |
flower |
Having the androecium adnate to the gynoecium. |
|
tepal |
|
STRUCTURE |
|
Any member of an undifferentiated perianth; may be green and foliaceous or colored and petaloid, distinct or else connate with one or more others, and/or free or else adnate with one or more other floral structures. |
