ERICACEAE: Heath Family

KEY TO SPECIES OF GAYLUSSACIA

 

1. Leaves evergreen, twigs sharply angled (See GROUP H) .............. G. brachycera

1. Leaves deciduous, rarely semi-evergreen, twigs terete or nearly so (GROUP J) ............ 2

2. Leaf blade underside without dark yellow resinous globules but bearing stalked glands ..................................................................... 3

3. Plants mostly 30-150 cm, year 1 twigs with silvery gland-tipped hairs ca 1.25 mm; hypanthium and fruits with abundant hairs 0.8-1 mm ................................. G. mosieri

3. Plants mostly 10-30 cm, year 1 twigs with gland-tipped hairs ca 0.1 mm; hypanthium and fruits with only a few hairs ca 0.1 mm ........ G. dumosa

2. Leaf blade underside bearing dark yellow resinous globules to ca 0.12 mm sitting on flat surface .............................................. 4

4. Globules on both surfaces, sometimes scanty on upperside........ G. baccata

4. Globules on lower surface only .......................................... 5

5. Leaf blade with midvein protruding ca 0.5 mm .......................................... G. ursina

5. Leaf blade with midvein not protruding or barely so ................................. G. frondosa

 

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