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Spore Morphology of the Polypodiaceae from Northwestern Argentina

机译：阿根廷西北部the足科的孢子形态

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摘要

The spores of the following genera of Polypodiaceae growing in northwest Argentina were analyzed: Campyloneurum, Microgramma, Pecluma, Phlebodium, Pleopeltis and Polypo-dium. The study involved analyses of herbarium material using light microscopy and scanning electron microscopy. The spores are monolete, 40-90 μm in major equatorial diameter, eliptic to oblong in polar view and plane to concave-convex in equatorial view. The exospore ranges from 2— 5 μm thick, is apparently double-layered, with a verrucate or tuberculate surface that is usually perforated. The perispore ranges from 0.3-1 μm thick, is apparently single-layered, attached to the exospore, perforated, and generally smooth or in some cases micro-ornamented. Most of the taxa analyzed have globules on the surface. These are single or associated in masses and irregularly distributed. Characteristics such as size, shape and exospore and perispore sculpture allow us to differentiate among some of the genera as well as recognize species groups. Microgramma, Campyloneurum, Pecluma, Pleopeltis and Polypodium have verrucate spores whereas those of Phlebodium are tuberculate.
机译：分析了在阿根廷西北部生长的以下Polypodiaceae属的孢子：樟脑，Microgramma，Pecluma，Phlebodium，Pleopeltis和Polypo-dium。该研究涉及使用光学显微镜和扫描电子显微镜对植物标本室材料进行分析。孢子为单子状，大赤道直径为40-90μm，在极视图中为椭圆形至椭圆形，在赤道视图中为平面至凹凸形。外孢子的厚度范围为2-5μm，显然是双层的，其表面通常为穿孔的或结节状的。周孢子的厚度为0.3-1μm，显然是单层的，附着在外孢子上，穿孔，通常光滑或在某些情况下微装饰。分析的大多数分类单元的表面都有小球。这些是单个的或相关联的且不规则地分布。大小，形状，外孢子和周孢子雕塑等特征使我们能够区分某些属并识别物种组。显微语法，樟脑，百草枯，鞘膜炎和息肉具有孢子，而鞘翅目则是结核。

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