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Adopt-a-plant (Platycerium grande) January 29, 2006

Posted by flutterby in Species.
1 comment so far

Kingdom: Plantae
Division: Pteridophyta
Class: Pteridopsida
Order: Polypodiales
Family: Polypodiaceae
Genus: Platycerium
Species: grande

The Platycerium is an epiphyte plant, meaning that it does not grow from the soil, but from tall trees (as least in this case). It gets its nutrition mostly from the air, although sometimes it may use water pockets from it’s host. Grandes usually grow on coconut palms. The Platycerium has two different types of fronds, green fertile & brown sterile. The round brown sterile fronds surround groups of fertile fronds at the base of each group. (See picture) The Platycerium grande has two brown spore patches at the underside tips of it’s green fertile fronds, this is the way that it reproduces. (Platycerium grande is often confused with P. superbum, but the superbum only has one spore patch)

(see brown sterile fronds)Fronds

(a Platycerium grande)Platycerium grande
Sources: Staghorn fern


Dichotomous Key January 24, 2006

Posted by flutterby in Plant Bio.

1. Alive at maturity – 4
1. Dead at maturity – 2

2. Function is conducting things throughout plant – Xylem
2. Function is strength and support – 3

3. Have secondary walls and is star-shaped – Sclereids
3. Have secondary walls and is long & slender – Fibers

4. Occurs in fruits – 5

5. Function is transport – Phloem
5. Function is storage & photosynthesis – Parenchyma

4. Occurs in stem, petiole or leaf – 6

6. Function is support – Collenchyma
6. Has a specialized function – 7

7. Regulates gas exchange from inside to outside – Guard cells
7. Prevents water loss – Trichome

January 16, 2006

Posted by flutterby in Plant Bio.

Plants are fun!