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rhizome |
= rootstock |
STRUCTURE |
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An underground, usually horizontal stem, often superficially resembling a root but easily distinguished by the presence of nodes, from which it branches exogenously to produce the aboveground portion(s) of the shoot. |
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mealy 2 |
> farinaceous, farinose |
pubescence |
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Loose, dry, and disintegrating in finely granular pieces like meal or flour. |
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involucral bract |
= phyllary; < bract (broad sense) |
STRUCTURE |
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One of the bracts composing the involucre of a capitulum (head,); in Asteraceae (Compositae). |
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corolla pl. corollae, corollas |
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STRUCTURE |
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Collectively, the petals of a flower, whether distinct or connate; the inner or distal envelope of a differentiated perianth, whether the other envelope (calyx) is actually present or is deemed to be absent due to evolutionary reduction. |
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oblique 1 |
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base |
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Asymmetric about its longitudinal axis. |
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glossy |
= laevigate, lustrous, polished, shining, shiny |
reflectance |
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Uniformly reflecting a high proportion of incident light at all angles. |
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checkered 2 |
= tessellate |
relief |
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Having a pattern of regularly disposed squares marked by raised or depressed vasculature. |
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papilliform |
= papillar(y) |
solid shape |
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Small, conoidal, and protruding from a larger structure; resembling a pimple; esp. trichomes. |
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pseudobulb |
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STRUCTURE |
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An enlarged internode of an aboveground stem, storing water and photosynthate, resembling a bulb; esp. in Orchidaceae. |
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barbel |
= barbella |
STRUCTURE |
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A small barb. |
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flagelliform |
= whip-like |
solid shape |
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Very slender, terete, generally straight, and apparently supple. |
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striate 2 |
= streaked; < lineate |
relief |
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Covered with very narrow and shallow, relatively long, more or less straight and parallel depressions. |
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pilose |
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pubescence |
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Bearing relatively sparse, soft, slender, more or less erect capillate trichomes. See also pilosulous. |
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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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foliar |
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insertion |
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Upon or otherwise directly associated with the leaves. |
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carina 2 pl. carinae |
= keel |
STRUCTURE |
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Collectively, the two relatively small, connate or coherent, abaxial (lower) petals that form the keel-like portion of a papilionaceous corolla. |
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egg-shaped 2 |
= ovoid |
solid shape |
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Transversely circular, broadest near a bluntly rounded base, and convexly attenuate to a narrower rounded apex; like a fowl egg. See also obovoid. |
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laevigate 1 |
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relief |
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Very smooth. |
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recurved |
= arching |
orientation |
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Curving outward (abaxially), downward, or backward. |
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infrabracteal |
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insertion |
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Upon the axis directly below a bract insertion. |
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hypogeal |
= hypogeous, subterranean |
location |
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Within the ground, beneath its surface; esp. of cotyledons following seed germination. |
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conic(al) |
= cone-shaped |
apex |
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Transversely round, essentially triangular in median longitudinal section, and broadest proximally. See also obconic(al). |
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nodal |
> interpetiolar |
insertion |
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Upon or associated with the nodes. |
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ovuliferous scale |
< cone scale, macrosporophyll (not recommended), megasporophyll |
STRUCTURE |
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A fertile scale in a female cone (megastrobilus), bearing one or two naked ovules, and subsequently seed(s), subtended by and borne closely upon a sterile, fleshy or woody scale sometimes termed a bract scale; in Pinophyta. |
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macrophyll (not recommended) |
= leaf, megaphyll; > frond, needle |
STRUCTURE |
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A principal, vegetative shoot organ borne laterally from a stem node; its vascular tissues, if any, continuous with those of the stem; undergoing no significant secondary growth; usually more or less bilaterally symmetrical; comprising a distal, usually laminar blade and/or a proximal stalk (petiole) or sheath; usually a primary site of photosynthesis. |
