Agriculture Reference
In-Depth Information
In the overall phylogeny of legumes, as shown in Fig. 1 in Lewis et al. (2005), the tribe
is placed near Sophoreae and far removed from the typical Australian tribes, discussed
later.
1.3.3 Tribes with the 50kb inversion
All tribes discussed from this point on have the 50kb inversion. The first major branch,
referred to as the Genistoid clade, is a rather heterogeneous group and includes
some genera discussed earlier, i.e. those in tribe Brongniartieae, parts of Sophoreae,
Swartzieae and anomalous members of old tribe Dalbergeae (the branch labelled 'var-
ious'). The remaining tribes included are Euchrestieae and Thermopsideae, which
form a sub-clade with parts of Sophoreae and a group that includes Podalyrieae,
Crotalarieae and Genisteae. On nodule characteristics, the last two fit well together,
but the Podalyrieae have more in common with earlier tribes. They are so divided
below.
Euchrestieae, Thermopsideae and Podalyrieae
Euchrestieae has only one genus, with four species found in Asia. It is likely that it will
be included in a modified Sophoreae, possibly even included in genus
Sophora
(Ohashi,
2005). This is consistent with known nodulation characteristics. Thermopsideae are
exclusively northern hemisphere and Podalyrieae exclusively South African, mainly
from the Cape area. Their close relation thus seems a bit obscure. Table 1.8 lists their
genera, but note that
Pickeringia
may be moved as discussed above. So far, genera in
Tab l e 1 . 8
Genistoid tribes Thermopsideae and Podalyrieae
Tribe Genus Species
Nod.
Thermopsideae
Ammopiptanthus
H.S. Cheng
1-2
1
Anagyris
L.
2
2
Baptisia
Vent.
15-17
5
Pickeringia
Nutt.
1
1
Piptanthus
Sweet
2
2
Thermopsis
R. Br.
∼
23
8
Podalyrieae
Amphithalea
Eckl. & Zeyh.
42
3
Calpurnia
E. Mey.
7
2
Cyclopia
Vent
23
12
Liparia
L.
20
5
Podalyria
Willd
14
10
Stirtonanthus
B.-E. van Wyk A.L.
3
?
Schutte
Virgilia
Poir.
2
2
Xiphotheca
Eckl. & Zeyh.
9
2
