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Page 50 · DO #1246 · 53_Arber_AN11r
- Collection
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Agnes Robertson Arber (1879–1960) papers
- Item/Folder
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Notebook An 11 -- "A. A. M0Bk", 1936–1942, n.d.
- Digital Object
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DO #1246,
page 50
- Collection-level dates
- 1886–1985
Page transcription
Aug 26-27, 1928
48
Form relations within individual plans — homologous members show // 'I'm not identical homology analogs'. One type I member does not result singly from inherited debt of another type e.g. leaf cells numerous inherited foliaceous leaves. [neural] intervariance limits
When the comparison is in question, the // can be questioned (is nature) since the distinct between reproductive veg. structures may go back to the common ancestry. It's however possible two in some ancient stock the reproductive members may have resembled the veg. members more [In occasion less] close to a modern species - But the fact phylogenetic series in the higher plants means together no definite evidence denies this.
Comparisons may be instituted, [to select us travel] between strict // (order not taxonomic)
① Serial repetition members in an individual plant e.g. cotyledon - leaf - leaf - leaf.
② the main morphological categories, — short / root.
③ convergent // members in allied plants
④ of reproductive shoots + to some species in related plants
⑤ veg. rep. Members in the same plant, in allied plants
⑥ members belong & diff. Morphological categories
[Settled] grade member is plant
Parasites relate 1 element
Es. short leaf
Stem; axis + pedicle; leaves borne by, which short + blade 1 single leaf!