Range Science 307
Yüklə 412,2 Kb. Pdf görüntüsü
|
3
LAB EXERCISES
The Grass Collection How to collect, press, and mount your grasses ................................................................................... 92 How to find different grasses ............................................................................................................... 93 Sample field notes ................................................................................................................................. 94 Lexicon of commonly used topographic and vegetative terms.......................................................... 95 The grass collection............................................................................................................................... 98 Sample collection .................................................................................................................................. 99
Vegetative Structures of Grasses....................................................................................................................... 101 Spikelets and Flowers ........................................................................................................................................ 105
Describing the Grass Inflorescence................................................................................................................... 109 The Grass Spikelet Formula .............................................................................................................................. 114 Keying and identifying your grasses................................................................................................................. 116
Sedges and Rushes ............................................................................................................................................. 118 Chloridoideae Subfamily Eragrostideae Tribe ............................................................................................................................. 120 Cynodonteae Tribe .............................................................................................................................. 124 Pappophoreae Tribe ............................................................................................................................ 128 Summary of the Study Mounts........................................................................................................... 130
Aristidoideae Subfamily Aristideae Tribe................................................................................................................................... 132 Summary of the Study Mounts........................................................................................................... 134
Panicoideae Subfamily Paniceae Tribe ..................................................................................................................................... 136 Andropogoneae Tribe ......................................................................................................................... 140 Summary of the Study Mounts........................................................................................................... 143
Arundinoideae Subfamily Arundineae Tribe................................................................................................................................. 146 Summary of the Study Mounts........................................................................................................... 148
Pooideae Subfamily Bromeae Tribe ..................................................................................................................................... 150 Poeae Tribe 1, Aveninae Subtribe...................................................................................................... 152 Poeae Tribe 2, Poinae Subtribe .......................................................................................................... 156 Stipeae Tribe........................................................................................................................................ 160 Hordeae Tribe...................................................................................................................................... 162 Summary of the Study Mounts........................................................................................................... 165
Appendices I: Useful Literature about New Mexico Grasses.............................................................................. 167 II: Index of Common Synonyms of New Mexico Grasses.............................................................. 168
Grass Collection Grading Form ........................................................................................................................ 171
4
5 INTRODUCTION TO GRASSES "Grasses are the greatest single source of wealth in the world." -- Agnes Chase, First Book of Grasses (1959).
Additional reading: Grasses and Man, in this study guide The Naming of Grasses, in this study guide Harrington, p. 1-6
1. Of all the flowering plants in the world, grasses are probably the most important to man.
2. Just how many are there?
Fifth largest plant family 1) Sunflower family (Asteraceae) 2) Orchid family (Orchidaceae) 3) Pea family (Fabaceae) 4) Madder family (Rubiaceae) 5) Grass family (Poaceae or Gramineae)
3. The taxonomic hierarchy of grasses
Cultivated corn as an example:
Yüklə 412,2 Kb. Dostları ilə paylaş:
|