Coccinia adoensis var. aurantiaca (C.Jeffrey) Holstein,

Holstein, Norbert, 2015, Monograph of Coccinia (Cucurbitaceae), PhytoKeys 54, pp. 1-166: 60-62

publication ID

http://dx.doi.org/10.3897/phytokeys.54.3285

persistent identifier

http://treatment.plazi.org/id/86E8C444-4E39-2274-F165-1394E34AFF55

treatment provided by

PhytoKeys by Pensoft

scientific name

Coccinia adoensis var. aurantiaca (C.Jeffrey) Holstein
status

stat. nov.

2b. Coccinia adoensis var. aurantiaca (C.Jeffrey) Holstein  stat. nov.

Coccinia aurantiaca  C.Jeffrey, Kew Bull. 17: 169. 1963.

Coccinia adoensis var. aurantiaca  LSID  Type: Tanzania. Dodoma: Kondoa District, Great North road, 15 miles S of Kondoa, 1310 m, fl, fr, 19 Jan 1962, R. Polhill & S. Paulo 1221 (Holotype: K! [K000313236, digital image: JPS, K], isotypes: B! [B 10 0154922, digital image: B, JPS], B! [B 10 0154923, digital image: B, JPS], BR! [BR0000008887252, digital image: BR, JPS], EA (2)!, PRE! [PRE0592951-1, digital image: JPS], PRE! [PRE0592951-2, digital image: JPS]).

Coccinia adoensis var. aurantiaca  LSID  Type: Tanzania. Dodoma: 1 ml. [1.6 km] S of Dodoma, Imagi hill, R. Polhill & S. Paulo 1274 (Paratypes: B! [B 10 0154921, digital image: B, JPS], BR!, EA!, K (3)!, P! p.p.,

Coccinia adoensis var. aurantiaca  LSID  PRE!, S! [S08-11841, digital image: S]).

Coccinia adoensis var. aurantiaca  LSID  Type: Tanzania. Mwanza: Mwanza, Ilemera, Butimba, R.E.S. Tanner 1902 (Paratypes: BR!, EA!, K (2)!).

Coccinia adoensis var. aurantiaca  LSID  Type: Tanzania. Mwanza: Mbarika [chiefdom], Buzomo, R.E.S. Tanner 1068 (Paratypes: BR!, COI (2)!, EA!, K!, NY!).

Coccinia adoensis var. aurantiaca  LSID  Type: Tanzania. Mwanza: Mwanza, R.E.S. Tanner 646 (Paratype: K!).

Coccinia adoensis var. aurantiaca  LSID  Type: Tanzania. Shinyanga: near Shinyanga, R.D. Bax 57 (Paratypes: K (2)!).

Coccinia adoensis var. aurantiaca  LSID  Type: Tanzania. Shinyanga: hills near Shinyanga, B.D. Burtt 2517 (Paratype: K!).

Coccinia adoensis var. aurantiaca  LSID  Type: Tanzania. Shinyanga: Shinyanga, H. Koritschoner 1823 (Paratypes: EA (2)!, K!).

Description.

Perennial climber. Stems up to 10 m, almost tomentose with short (< 0.5 mm), stiff, whitish trichomes. Petiole 1.5-3.5 cm, indumentum similar to stems. Leaves 5.2-12.5 × 6.4-14.5 cm, cordate, shallowly to profoundly 3- or 5-lobate. Lobes triangulate, ovate, elliptical to obovate. Margin serrate to lobulate. Apex obtuse, rarely acute, with final tooth. Upper leaf surface white-pustulate sometimes more or less pubescent with short, whitish trichomes. Lower leaf surface usually densely covered with curved or short, straight trichomes on nerves. Probracts up to 1.5 mm, often caducous. Tendrils simple. Male flowers solitary or in racemes. Common peduncle 0.4-3 cm, pedicels in racemes up to 0.5 cm, pedicel of solitary flowers 1-2 cm, indumentum as on stem. Bracts up to 1.5 mm, persisting. Perianth tube densely covered with short (< 0.5 mm) trichomes. Calyx lobes 1-3 mm, narrow triangular to dentate, spreading. Corolla 1.6-2.4 cm long, pale yellow-brown to orange, rarely? yellow, with green to orange venation, lobes 0.6-1 cm. Filament column, anther head, and pollen sacs more or less pale orange, rarely yellowish? (Fig. 10 b). Female flowers solitary, pedicel 1.2-4 cm, indumentum as on stems. Hypanthium densely covered with short (< 0.5 mm) trichomes, calyx lobes, and corolla as in male flowers. Style shape not seen, green. Stigma shape not seen, yellow to orange. Ovary with short trichomes. Unripe fruits pale green with irregular lighter spots and dark green longitudinal lines. Fruits 5-9 × 1.5-3.5 cm, long ovoid, apex sometimes beaked, when ripe orange-red. Seeds 6-6.5 × 3.5-4 × 1.5-1.7 mm [L/W/H], slightly asymmetrically obovate, face flatly lenticular.

Phenology.

Flowering time: January, March, July, October, December.

Distribution.

Fig. 23. Tanzania (Dodoma, Iringa, Manyara, Morogoro, Mwanza, Shinyanga). Elevation 600-1200 m. Red sandy soil, red clay, granite. White clay. Gray sand. Brown sandy loam. Dry Miombo woodland, Acacia tanganyikensis  - Acacia tortilis subsp. spirocarpa  - Adansonia digitata  - Maerua crassifolia  - Balanites aegyptiaca  woodland, long grass savannas, dry ( Commiphora  - Acacia  ) bushland, thickets (e.g., Combretum  thickets), among rocks on hills.

Use.

Leaves are boiled and eaten (J.L. Newman 62). Fruits edible when ripe and dry (E.S. Macha 600).

Vernacular names.

Sandawe language: koba (J.L. Newman 62).

Remarks.

The status of this taxon as species is unclear, therefore it is treated as a variety of the polymorphic Coccinia adoensis  . Coccinia adoensis var. aurantiaca  specimens as listed here are usually more densely covered with trichomes than Coccinia adoensis var. adoensis  . Jeffrey segregated this species from the polymorphic Coccinia adoensis  because of the non-beaked fruits and flat seeds with a hyaline girdle. The beak is a sterile part of the ovary with variable length, but it does not occur in all populations. Two of the paratypes (R. Polhill & S. Paulo 1274 (BR, P)), which match other Coccinia adoensis var. aurantiaca  collections vegetatively, have a slightly beaked fruit, although most other collections do not. The seeds are also hardly distinct from Coccinia adoensis  , perhaps somewhat larger. Seeds in Coccinia  are enclosed in a hyaline aril. Jeffrey only observed the dry collapsed aril, which is not part of the seed, as a "hyaline girdle". The orange color of the petals, even with purple venation also occurs in individuals of Coccinia adoensis var. adoensis  that have a less dense indumentum. The corolla is thus not a good distinguishing character either. However, this variety seems to occur in a drier part of the range of the overall Coccinia adoensis  distribution ( Holstein and Renner 2011b).

Taxonomic remarks.

The flowers in the R. Polhill & S. Paulo 1274 specimen in P do not belong to Coccinia  . The calyx appears to be Momordica foetida  Schum. & Thonn. The HEID specimen (HEID779579) of that collection is also mistaken, eventually a mix-up while mounting the specimen. It has a completely different indumentum and a narrow, almost cylindrical perianth tube.

Specimens examined.

(Selection, in total: 29) Tanzania. Dodoma: Dodoma–Kondoa road, c. 20 km S of Kondoa, 05°16'31.5"S, 35°53'01.1"E, N. Holstein et al. 85 (DSM, M), and 86 (M). Iringa: Iringa Rural District, along road Iringa–Morogoro road and Lukosi River, at bottom of Kitonga Gorge, c. 6 km W of Mahenge village at milepost 253 km from Morogoro, 7°38'S, 36°14'E, [7°34'S, 36°19'E], C.M. Taylor et al. 8485 (K, MO); [Ruaha National Park], Msembi [near airfield], P.J. Greenway & K. Kanuri 14811 (EA (2), K, M). Manyara: Tarangire National Park, road Tarangire camp–Babati, 1 ml. from camp, H.M. Richards 24817 (EA, K). Morogoro: Kilosa district, Elphon’s Pass, 7°22'S, 36°42'E, J.C. Lovett & T.C.E. Congdon 2931 (K, MO).

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Cucurbitales

Family

Cucurbitaceae

Genus

Coccinia

Loc

Coccinia adoensis var. aurantiaca (C.Jeffrey) Holstein

Holstein, Norbert 2015
2015
Loc

Coccinia adoensis var. aurantiaca

Holstein 2015
2015
Loc

Coccinia adoensis var. aurantiaca

Holstein 2015
2015
Loc

Coccinia adoensis var. aurantiaca

Holstein 2015
2015
Loc

Coccinia adoensis var. aurantiaca

Holstein 2015
2015
Loc

Coccinia adoensis var. aurantiaca

Holstein 2015
2015
Loc

Coccinia adoensis var. aurantiaca

Holstein 2015
2015
Loc

Coccinia adoensis var. aurantiaca

Holstein 2015
2015
Loc

Coccinia adoensis var. aurantiaca

Holstein 2015
2015
Loc

Coccinia adoensis var. aurantiaca

Holstein 2015
2015