pappose |
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architecture |
flower, fruit |
Bearing a pappus; esp. in Asteraceae (Compositae). |
equitant |
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arrangement |
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Alternate, distichous, basal, and congested, each conduplicate with its lateral edges overlapping and/or overlapped by those of the immediately adjacent one(s). |
perisperm |
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STRUCTURE / SUBSTANCE |
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A genetically diploid (2n chromosomes) nutritive tissue in a seed; containing stored carbohydrate and/or oil utilized by the embryo prior to and especially upon germination; derived from the nucellus. See also endosperm (albumen). |
valve |
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STRUCTURE |
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Any longitudinal segment of a fruit wall delimited by lines of dehiscence. |
annulus 1 pl. annuli |
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STRUCTURE |
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A small ring-like protrusion from the strobilar stalk near its base and below the lowermost sporangiophores, sometimes bearing small sporangia; esp. in Equisetum. |
zoned |
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coloration |
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Having two or more fairly distinctly delineated areas of contrasting hues and/or intensities. |
gummy |
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texture |
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Highly viscous and sticky, liquid or more or less deformably solid, sometimes more or less elastic. |
pubescent 1 (broad sense) |
|
pubescence |
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Bearing trichomes. This is one of the most ambiguous terms in the botanical lexicon; it should not be used unless its intended meaning is explicit. |
glochidiate |
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pubescence |
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Bearing glochids (glochidia). |
resinous 2 |
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texture |
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Having the consistency of resin. |
haustorium pl. haustoria |
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STRUCTURE |
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An absorbing and anchoring organ, often root-like, excrescent from a vegetative part of a parasitic or hemiparasitic plant, by which the plant communicates intimately with and derives sustenance and support from its host plant, into whose tissues the haustorium intrudes. |
rugulose |
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relief |
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Slightly or finely rugose (corrugate, wrinkled). |
hysteranthous |
|
maturation |
non-floral structure, esp. leaf |
Maturing later than the flowers. |
ringed |
|
relief |
bark |
Fissured, mainly horizontally, with at least some of the fissures individually encircling the stem more or less completely. |
intricate |
|
arrangement |
|
Entangled; irregularly intertwined and not readily disentangled. |
infrabracteal |
|
insertion |
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Upon the axis directly below a bract insertion. |
laminar 1 |
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insertion |
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Upon or otherwise directly associated with the lamina (blade) of a foliaceous structure. |
coating |
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CHARACTER |
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Exudate that covers the surface proper. See also indumentum (vesture), pubescence. |
knee root |
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STRUCTURE |
|
A specialized secondary root of a wetland tree, a portion of which projects above mean water level and appears to bend as a leg does at the knee, its distalmost portion being anchored in the substrate beneath the water. The knee of the root is commonly regarded as a conduit for gas exchange between root interior and atmosphere, a function whose need is posited on the basis of the highly anaerobic and saturated conditions prevailing in wetland substrates. |
circumscissile |
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dehiscence |
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Splitting transversely through the exterior wall about its entire circumference, the resulting upper cap-like portion falling away. |
liguliflorous |
|
architecture |
capitulum (head) |
Bearing florets that all are bisexual and have zygomorphic corollas; in Asteraceae (Compositae). |
sinuous |
|
course |
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Regularly wavy in one plane, curved alternately and more or less regularly to either side. |
continuous 3 |
|
architecture |
rachilla, rachis |
Not disarticulating at maturity. |
subequal |
|
size |
equivalent structures |
Nearly uniform in extent. See also equal, unequal. |
aestivation |
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CHARACTER |
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Disposition of perianth (undifferentiated), calyx, or corolla members in the bud. |