Family: Loranthaceae
Amyema
Citation:
Tieghem, Bull. Soc. Bot. Fr. 41:499 (1894).
Derivation: Greek a, negative; myeo, I instruct, initiate; alluding to a genus not previously recognised; cf. the Greek amyema (neuter), those not initiated.
Synonymy: Not Applicable Common name: None
Description:
Glabrous or tomentose; haustorial attachments with or without epicortical (i.e. on the bark of the host) runners; leaves flat or terete, when flat usually curvinerved.
Inflorescence axillary, primarily a pedunculate many-rayed umbel of triads but variously reduced, especially to a head or simple umbel; bracts single under each flower; petals free (in Australia), mostly 4-6; anthers basifixed, immobile, introrse, 2- or 4-locular; style usually articulate at the base; fruit globular to ellipsoid.
Distribution:
|
About 100 species ranging from Malaya and the Philippines to Australia and the western Pacific; 36 species in Australia.
|
|
|
Biology:
No text
Key to Species:
|
|
|
2. Flowers in dyads; corolla usually 4-merous; free part of the filament shorter than the anther; hosts Grevillea or Hakea |
|
A. gibberulum 2. |
|
2. Flowers in triads; corolla usually 5-merous; free part of the filament longer than the anther |
|
|
|
3. Inflorescence and flowers tomentose; host Casuarinaceae |
|
A. linophyllum 4. |
|
3. Inflorescence and flowers glabrous; host usually Acacia |
|
A. preissii 10. |
|
|
|
4. Inflorescence a pedunculate simple umbel; haustorial attachments produced from epicortical runners; hosts Eucalyptus or Melaleuca |
|
A. sanguineum 12. |
|
4. Inflorescence a pedunculate umbel of triads or tetrads, or contracted to a head; haustorial attachment without epicortical runners |
|
|
|
5. Inflorescence a pedunculate head of 3-6 closely sessile flowers; host Acacia |
|
|
|
6. Flowers in a single group of 3-5; central flower ebrocreate |
|
A. fitzgeraldii 1. |
|
6. Flowers in 2 opposite triads; all flowers bracteate |
|
A. maidenii 5. |
|
5. Inflorescence an umbel of 2 or more triads or tetrads |
|
|
|
|
|
|
|
9. Corolla in the mature bud longitudinally ridged at the apex, not inflated at the base; leaf lamina mostly more than 10 mm wide; hosts commonly Santalacaeae and Loranthaceae |
|
A. miraculosum 8. |
|
9. Corolla in the mature bud not longitudinally ridged, inflated at the base; leaf lamina mostly less than 6 mm wide; host Melaleuca |
|
A. melaleucae 6. |
|
8. Corolla sparsely to densely tomentose; host Acacia |
|
|
|
10. Central bracts of the triads more than 3 mm long; calyx uniformly cylindrical |
|
A. hillianum 3. |
|
10. Central bracts of the triads less than 3 mm long; calyx abruptly widened just below the limb |
|
A. quandang 11. |
|
7. Rays in the umbel usually more than 2 |
|
|
|
11. Triads with all flowers pedicellate; hosts Eucalyptus, rarely Acacia |
|
A. miquelii 7. |
|
11. Triads or tetrads with the central flower sessile |
|
|
|
12. Corolla glabrous; hosts mostly Santalaceae or Loranthaceae |
|
A. miraculosum 8. |
|
12. Corolla rusty-tomentose; hosts Eucalyptus, rarely Acacia |
|
A. pendulum 9. |
Author:
Not yet available
|