Rept. hystrix Awned spikelets spread at right angles to rachis; glumes absent or reduced, per How to Know the Grasses by R.W. Fruiting raceme simply pinnate, In plants, a rachis is the main axis of a compound structure. The stalk above the calamus is a solid rachis having an umbilical groove on its underside. Stipes one and a half Pinnae or leaflets may be arranged alternately or in opposite pairs along the midrib.

and a central point. of Ill., IV, p. 453, Pl. Hay-scented Fern, Dennstaedtia punctilobula Blades tacky to the touch w glandular hairs covering pinnae, stipe & rachis, per Peterson Field Guide to Ferns of Northeastern and Central North America. Help support this site ~ Information for sponsor opportunities. Common Bottlebrush Grass, Elymus hystrix var. Dryopteris wallichiana Dryopteris de Wallich, Alpine wood fern) Mon conseil: Grande fougère possèdant un feullage vert foncé contrasté par ses rachis d'un brun-noir. Pinnae are lance-oblong to narrowly elliptic in outline with a long taper to a pointed tip. Image acknowledgement: University of Waikato. Very thick stipes, not observed to branch and marked with uneven striae. michauxii Axis & raceme rachises densely velvety-pubescent; spikelets appressed-villous, per Manual of the Grasses of the United States. of Ill., IV, p. 407, Pl. Marginal Wood-fern, Dryopteris marginalis In Dryopteris the rachis groove is open to receive rachillae grooves, per Flora of Taiwan. Stigmaria Evenii, Lesqx., Geol. Each fern plant may have from one to many fronds. It is fairly easy to ID from the winged stem except for a gap just above the lowest pinnae pair, and fronds usually longer than wide. of Ill., IV, p. 406, Pl. More commonly fronds are divided into secondary pinnae and are 'bipinnate', or into tertiary pinnae and are 'tripinnate'. Cereal Rye, Secale cereale Spikelets alternate on opposite sides of rachis, mostly 2-flowered, per Vascular Flora of the Carolinas. Where it subdivides into further branches, these are known as rachilla (plural rachillae). The base is hairless but covered in brown scales, the scales becoming more sparse above, and the stipe becoming hairy near the frond. Schimper groups them under the … Thanks for your understanding. Note last year's leaf rachises. See Terms of Use and Privacy Policy. enlarged to the point of attachment of the fructifications; capsules Fire Cherry, Prunus pensylvanica Pedicels more than 1cm long; rachis arising directly from old wood, per Vascular Flora of the Carolinas. Lady Fern is recognized by its reddish or wine-colored stalk.