Phylogeny of Ten Kenyan Plectranthus Species in the Coleus Clade Inferred from Leaf Micromorphology, Rbcl and MatK Genes
Table 1
Description of the ten Plectranthus species.
Species
Succulent leaf
Height (m)
No. of inflorescence Flowers
Cymes
Pedicels length (mm)
Calyx length (mm)
Corolla length (mm)
Petiole length (mm)
Leaf apex
Bracts
Nutlet color
Staminal filaments
Leaf blade
Succulent stem
Eglandular hairs
P. barbatus
+
1–5
10–14
5–7
3–7
3–5
8–26
3–50
Ob/rd
ov/api
Brown/black
Fused
El/ov
+
An/pt
P. caninus
+
0.1–0.6
6
3
2
3–5
6–14
3–10
Ob/rd
ov
Grey/black
Fused
El/ov
−
Rt/pt
P. montanus
+
0.4–2.5
10–40
5–20
2-3
1.5
3–5
0
Ob/rd
El/ov
Brown/red
Free
El/obv
+
Rt/pt
P. otostegioides
+
0.3–0.5
6
3
6-7
5
11–15
3
Ob/rd
Obv/El
Brown/red
Fused
Ov/El/Obv
−
pt
P. lanuginosus
+
0.3–1
6–12
3–6
3–6
3-4
8–16
5–30
Ob
EL
Brown/black
Fused
Triangular
−
pt
P. pseudomarrubioides
+
1
10–14
5–7
1–3
2
5–9
1–15
Ob
El
Brown/red
Free
Rhombic
+
Rt/pt
P. edulis
−
0.3–1.2
6–10
3–5
3–5
2-3
6–8
1–20
Ob/rd
ov
Brown/black
Fused
Ov
−
Unknown
P. ornatus
+
0.4–1.5
6
3
3
5-6
14–22
2–10
Ob/rd
ov
Grey/black
Fused
El/ov
−
An/pt
P. aegyptiacus
+
0.5–2.5
6–24
3–12
3–10
2-3
8–15
5–20
Ac/rd
ov
Brown/red
Fused
Triangular
−
An/pt
P. amboinicus
+
0.3–0.5
10–20
5–10
3
3
4–15
2–13
Ob/rd
Ov/api
Brown/red
Fused
Ov
+
rt/pt
Morphological characters obtained from the latest Plectranthus classification in the FTEA [5]; Key. + (present); − (absent); Ob (obtuse); rd (round); Ac (acute); Ov (ovate); api (apiculate); El (elliptic); Obv (obovate); An (antrorse); pt (patent); rt (retrorse).
