decumbent


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

decumbent

[di′kəm·bənt]
(botany)
Lying down on the ground but with an ascending tip, specifically referring to a stem.
References in periodicals archive ?
Integument: Body surface dull, roughly punctate, and in great part tuberculate; antennal segments I to III densely tuberculate; antennal segments I to IV, legs, and abdominal sterna clothed with short semidecumbent to decumbent silvery bristle-like setae; femora densely tuberculate.
Repentia: main axis procumbent or decumbent, forming secondary haptera on the ventral face; primary axis arising from the dorsal face; receptacles compressed to flattened.
Stems decumbent or creeping (never erect); roots few to non-existent; megaspores nearly smooth S.
At the end of the swarm, however, the individuals landed on the ground with their antennal fibrillae decumbent.
Thorax: Pronotum: anterior margin noticeably separated from remainder of pronotum; each pronotal callus with weakly developed tubercles, divided by shallow incision; anterior lobe also with two obtuse tubercles, each contiguous with lateral margin of each callus; anterior lobe covered with irregular, long, decumbent setae; posterior lobe more shiny than anterior lobe, almost devoid of setae, with weakly developed swelling medially, reaching posterior margin of pronotum.
Other characters found in nearly all species of Megalastrum are erect or decumbent rhizomes, basal pinnae prolonged on the basiscopic side, pinna rachises and costules adaxially pubescent, and vein tips enlarged (hydathodous).
Dorsal vestiture very sparse, mostly very small, decumbent, silvery, simple to weakly sericeous setae, and frequently erect bristlelike setae.
12), erect long setae less abundant than short decumbent setae; epipleural border progressively narrowed toward apex, with long setae; humeral calla rounded, prominent; apical calla rounded.
Older plants develop a slender, often decumbent, aerial
DIAGNOSIS: Recognized by pale pinkish orange dorsal coloration in males and generally pale creamy white of females, with distinctive carmine red markings on head, anterolateral angle of pronotum, all thoracic pleura, abdomen and legs; hind legs with red spots at base of tibial spines; dorsum with mixed vestiture of golden scalelike setae and longer decumbent, thick, black, simple setae; venter with golden scalelike setae only; male endosoma with marginal processes, large flattened and right laterally projected medial spinelike process and smaller ridge of spines proximate to base.
Hemelytra strongly convex with shiny surface; antennae very stout with third segment sub-clavate and densely clothed with short, decumbent setae Alveotingis Osborn & Drake
The stem is usually massive, ranging from 12-20 cm in diameter, arborescent, 10 m tall, basally decumbent, bearing long, dense trichomes and many fibrous roots, which may occur from the base almost to the apex.