Scorpioid cyme is diagnostic of what family

#SCORPIOID CYME IS DIAGNOSTIC OF WHAT FAMILY SERIES#

For instance, if the perianth (sepals and/or petals) is said to be regular (radially symmetrical), that does not necessarily mean that the reproductive parts (stamens and/or pistils) are also regular.ДЎ. As always, keys should be read carefully. Unless explicitly stated to the contrary, references to вЂњflowersвЂќ are to normal open flowers (showy or obscure) and not to cleistogamous flowers (fertilized and setting seed while remaining in вЂњbudвЂќ). Nevertheless, before forging ahead in any of the individual keys, the user should find it helpful to read the summary, as a reminder of how one arrived there and as an opportunity to confirm accurate reading thus far. The summary of characters at the beginning of each individual key is not always exhaustive e.g., plants which will key as aquatics (Key A) or with neither green color nor developed leaves (Key C) may not run under later keys even though the later summary headings do not explicitly exclude such plants. Therefore, many of these plants are disposed of in Key A, the first of the individual keys.

Many aquatic plants are, however, seen but rarely in flower and even then the flowers are often much reduced and obscure but they can be identified vegetatively. Ordinarily, flowers are required for use of the seed-plant keys the diversity of plants covered simply does not allow a key based on vegetative characters alone. Except for a few true aquatic species in key A, ferns and their вЂњalliesвЂќ (horsetails, clubmosses, etc.) are in a separate key. The keys are designed to cover only seed-plants known from Michigan and may not work for other species in the same families or genera. Keys are a tool to help you learn the plants, not a subsitute for knowing them. However, plant taxa are composed of living organisms, and hence are variable there will always be some individuals so вЂњfar outвЂќ as to defy identification by any key.

And they accommodate some ambiguities on the part of the plants themselves (e.g., if the ovary is only partly inferior, it should key under both вЂњsuperiorвЂќ and вЂњinferiorвЂќ or if the perianth is only slightly bilaterally symmetrical it should key also under вЂњregularвЂќ).

#SCORPIOID CYME IS DIAGNOSTIC OF WHAT FAMILY SERIES#

Diverse families (or their component genera and species) will usually key down at more than one place, so the keys often cannot be вЂњworked backwardsвЂќ to gain a concise description of the diagnostic features of a family.ДЇurthermore, the keys accommodate a number of easy misinterpretations that a beginner might make (e.g., considering the 3 bracts of Hepatica to be sepals or believing a series of perianth parts to be absent when in fact the calyx or corolla is present but either very tiny or very early deciduous or interpreting a very deeply lobed corolla as composed of separate petals). Therefore, the keys are based on the most reliable and easily observed characters for that purpose only rarely (and incidentally) do they reflect the natural relationships and classification of the families. This series of keys is intended to lead one to the family, or sometimes directly to the genus or species, of an unknown plant. SEED PLANT FAMILY KEY - Seed plants (conifers and flowering plants) plants with seeds, born either in cones or in ovaries formed in flowers. General Keys to Families and Special GroupsДЇERN FAMILY KEY - Ferns and other spore-bearing vascular plants (вЂњfern alliesвЂќ) plants bearing spores and lacking flowers and seeds.

Scorpioid cyme is diagnostic of what family