About
Contact
Links
Electronic Flora of South Australia
Electronic Flora of South Australia
Census of SA Plants, Algae & Fungi
Identification tools
 

Electronic Flora of South Australia genus Fact Sheet

Family: Stackhousiaceae
Stackhousia

Citation: Smith Trans. Linn. Soc. 4:218 (1798).

Derivation: After John Stackhouse, author of works on the algal genus Fucus in the British Isles and on botanical illustrations of Theophrastus.

Synonymy: Not Applicable

Common name: None

Description:
Flowers arranged singly along the rhachis; bract 1 at each node of the inflorescence; bracteoles 2, at the base of the pedicel, conspicuous, bract-like, or reduced to membranous hyalescent vestiges. (Species 1-4)

Distribution:  About 18 species; 1 in New Zealand and 17 in Australia, of which 1 extends to Micronesia. Candles (probably Group A only).

Biology: Not Applicable

Key to Species:
1. Flowers arranged singly along the rhachis; bracts and bracteoles at each main node in the inflorescence 1-3 (Group A)
 
2. Leaves spathulate, rounded to obtuse at the apex; cocci prominently winged
S. spathulata 4.
2. Leaves obovate to linear or lanceolate, acute; cocci sculptured but not conspicuously winged
 
3. Annual; ovary with 3-5 carpels; corolla tube 3.5-5.2 mm long
S. annua 1.
3. Perennial; ovary with 3 rarely 5 carpels; corolla tube 5-8 mm long
 
4. Bract without a swollen base, subtending 2 conspicuous green bracteoles on either side of the base of the pedicel
S. aspericocca 2.
4. Bract with a saccate base, subtending 2 inconspicuous membranous hyaline often reduced vestiges of the bracteoles at the base of the pedicel
S. monogyna 3.
1. Flowers in clusters of 1-6 spaced along the rhachis; bracts and bracteoles at each main node in the infiorescence 3-12 or more (Group B)
 
5. Corolla tube stout; cocci prominently winged
S. megaloptera 6.
5. Corolla tube slender; cocci sculptured, not winged
 
6. Cocci usually 1, curved-obovoid, with the basal cavity shallow to deep, its thin rim extending distally along the mid-line exposing a narrow band of endocarp; leaves, at least the upper ones, usually scale-like, sometimes linear to narrow-elliptic
S. clementii 5.
6. Cocci 1-3, pyriform to dumb-bell-shaped, with the basal cavity deep, circular, not extended as above; leaves conspicuousthroughout the plant, usually linear
S. muricata 7.

Author: Not yet available


Disclaimer Copyright Disclaimer Copyright Email Contact:
State Herbarium of South Australia
Government of South Australia Government of South Australia Government of South Australia Department for Environment and Water