saccate


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saccate

[′sa‚kāt]
(botany)
Having a saclike or pouchlike form.
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Pleurocystidia are absent but the clavate, filamentous, subutriform, saccate and fusoid-ventricose cheilocystidia are striking features of this variety.
Flotation preferentially selects saccate pollen during conifer pollination.
Geastrum javanicum is characterized primarily by the velutinous, ephemeral mycelial layer, forming a cup under the saccate basidioma, fibrillose delimited peristome and subiculum.
Endoperodial body sessile 2 cm across globose to subglobose or slightly depressed onion shaped when not depressed smooth seated in saccate slightly depressed basel area of exoperidium grayish brown with occasional darker tints; Peristome fibrillose and conical dark brown surrounded by circular shallow groove.
Chonanthelia) is recognized by the saccate lobule with a very short lamina, a narrow mouth (ca.
Volva (exoperidium remnant) present at the base of pseudostipe, 24-29 X 14-22 mm, saccate, white (8A1), basal rhizomorphs present.
Leslie (2008) found indirect evidence for the existence of a pollination drop in extinct gymnosperms in the extensive occurrence of saccate pollen in many extinct groups with concurrent ovulate structures, parallel to the same closely correlated features in modern conifers, as is shown later here.
Branch appendages: first branch underleaf divided to the base into a lanceolate, bifid segment and a saccate segment, first leaf transformed into two saccate lobules.
8-40 perigynia; scales deciduous, but the basal one-third persisting as a conspicuous whitish green or pale brown saccate structure about 1 mm long, 2.4-4 mm long, 0.8-1.3 mm wide, 1-veined, the tips entire.
Sepals ovate to oblong, deciduous, glabrous, erect to spreading, equal, base of inner pair not saccate; petals white, rarely lavender or yellowish, ascending or spreading, obovate, spatulate, or oblanceolate, apex obtuse; claw distinct, glabrous; stamens 6, slightly tetradynamous; filaments unappendaged, glabrous or rarely pubescent, free; anthers oblong; nectar glands confluent, subtending bases of all stamens; ovules 30-80(-140) per ovary.
This genus is easily distinguished from Norantea Aublet and other related genera [Schwartzia Vellozo and Sarcopera Bedell, which constitute the Norantea complex] by its umbelliformly contracted raceme with relatively large flowers that are subtended by usually (sub) sessile (only in Marcgraviastrum glossostipum stipitate), recurved, tubular to saccate nectaries.
Calyx lobes small, [+-] persistent; corolla sympetalous or polypetalous, campanulate or tubular, or perianth uniseriate, [+-] tubular, parts free, basally saccate, glabrous or with hairs adaxially.