This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 Excerpt: ... be reduced to rudiments or suppressed or may be well developed and somewhat elaborated. The lemma may be delicate or indurate (hardened) and may be awned from the back or the summit. The palea shows more modification in this group than in any other. It may be suppressed or it may be as long as the lemma; the two ...
Read More
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 Excerpt: ... be reduced to rudiments or suppressed or may be well developed and somewhat elaborated. The lemma may be delicate or indurate (hardened) and may be awned from the back or the summit. The palea shows more modification in this group than in any other. It may be suppressed or it may be as long as the lemma; the two nerves may be coherent, appearing as one, or widely separated with the delicate internerve splitting. The rachilla may be extended beyond the base of the palea, a vestige of the suppressed florets, or it may be produced into a sharp callus below the lemma. The inflorescence is always a panicle, but this may be diffuse or dense and cylindrical or capitate (like a head). REVIEW Collect panicles of redtop, timothy, or of any grass with laterally compressed 1-flowered spikelets. If the inflorescence is dense, distinguish the individual spikelets. Dissect the spikelets and note whether any of the organs are suppressed. Note the point of attachment of the awn, if any. If possible, collect panicles of any species of Stipa. Lay a few of the florets in a little water and note the result. Note that twisted awns or the twisted parts of an awn are flattened. LESSON VIII SESSILE SPIKELETS IN ONE-SIDED SPIKES As stated in Lesson V, development does not follow a single line, so, having come to the end of one line, we must repeatedly return to the center and start in a new direction. In the group of grasses taken up in this lesson the principal character common to all is the spicate inflorescence. In the grasses related to barley (Lesson V) we found solitary 2-sided spikes, the spikelets sessile on opposite sides of the rachis. In the present group we have 1-sided (unilateral) spikes, the spikelets sessile or nearly so along one side of the rachis. The spikelets t...
Read Less
Add this copy of First Book of Grasses: The Structure of Grasses to cart. $15.42, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of First Book of Grasses: The Structure of Grasses to cart. $26.58, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
