Records determined by Giess

Determinations: 19

The following is a list of the records determined by Giess in species name order.

Click on a column heading to sort the entries in that column

NoSpeciesRecord dateRecorder(s)Coll.Det.Conf.HerbariaHabitatLocationLoc code(s) Outing codePlanted code Country QDSGrid ref.FZ DivAlt. (m)NotesLatLongLoc Acc Code
95044Aerva leucura16 Jun 1971JWH Giess
JWH Giess 11425 JWH Giess WIND
Caprivi: At Dikundu (19,2 kilometres south of Andara] on harvested mahango field.0Namibia (Caprivi Strip)1821A20

60 cm high; Herb; Notes: Annual herb. Rich, grey-black soil.

-18.12500021.3750002
93183Albizia antunesiana30 May 1966KL Tinley
KL Tinley 1454 JWH Giess WIND
Caprivi: Western Caprivi Strip: 6 miles south-west of Bwabwata Camp.0Namibia (Caprivi Strip)1722D30

70 ft high; Tree; Notes: Tree 70 feet in height (22 ins. dbh) on compacted sand marginal to dambo in scattered tree community of Piliostigma, Combretum imberbe and Acacia nigrescens. Uncommon but widespread in the above situation.

-17.87500022.6250005
95083Carissa spinarum1 Sep 1957JS Watt
JS Watt 37 JWH Giess WIND
Okavango, Rundu District: Okavango, probably Andara.0Namibia (Caprivi Strip)1821A20

-18.12500021.3750002
95104Commelina erecta5 Apr 1978JWH Giess
JWH Giess 15063 JWH Giess WIND
Okavango, Rundu District: Andara.0Namibia (Caprivi Strip)1821A20

Notes: Prostrate to upright. Shoots to 50 cm long. Sheaths often very small in leaf axils. Terminal sheaths round, boat-like. Flowers blue. Live plant together with Eulophobia sp. from Andara. Flowers in garden of W. Giess, Windhoek. Corr. nom.: SB 8.2003.

-18.12500021.3750002
95122Cyclosorus interruptus22 Jun 1971JWH Giess
JWH Giess 11526 JWH Giess WIND
Okavango, Rundu District: Andara. On riverbank of side-arm of Okavango at Andara Mission Station.0Namibia (Caprivi Strip)1821A20

pteridophyte; Notes: Fronds up to 60 cm long. Growing in or nearly in water. Common. Corr. nom.: E. Klaassen 23.07.07

-18.12500021.3750002
95123Cymbopogon caesius subsp. caesius14 Jun 1971JWH Giess
JWH Giess 11377 JWH Giess WIND
Caprivi: In omuramba Dikundu at Dikubdu, 19.5 km south of Andara.0Namibia (Caprivi Strip)1821A20

Graminoid; Notes: Tufted grass up to 1.20 m high. Very common.

-18.12500021.3750002
94396Cyperus articulatus30 Oct 1974B Van de Waal
B Van de Waal 40 JWH Giess WIND
Caprivi, Katima Mulilo: Liambezi Lake.0Namibia (Caprivi Strip)1724C40

Edge and dumps in up to 2 m deep water.

-17.87500024.3750004
95140Dioscorea asteriscus1 Nov 1982O Köhler
O Köhler s.n. JWH Giess WIND
Okavango, Rundu District: Andara.0Namibia (Caprivi Strip)1821A20

-18.12500021.3750002
95196Heteropogon contortus16 Jun 1971JWH Giess
JWH Giess 11433 JWH Giess WIND
Caprivi: At Dikundu (19.2 km south of Andara) on harvested mahangu field.0Namibia (Caprivi Strip)1821A20

Graminoid; Notes: Heavy grey-black clay soil.

-18.12500021.3750002
95207Hyperthelia dissoluta16 Jun 1971JWH Giess
JWH Giess 11409 JWH Giess WIND
Clay, grey-black ground.Caprivi: At Dikundu (19.2 km south of Andara, on haversted mahangofield).0Namibia (Caprivi Strip)1821A20

Perennial.

-18.12500021.3750002
95208Imperata cylindrica15 Jun 1971JWH Giess
JWH Giess 11392 JWH Giess WIND
Caprivi: At Dikundu, 19.5 km south of Andara.0Namibia (Caprivi Strip)1821A20

Graminoid; Notes: Dry woodland.

-18.12500021.3750002
94352Ottelia ulvifolia subsp. ulvifolia1 Feb 1974B Van de Waal
B Van de Waal 47 JWH Giess WIND
Caprivi: Katima Mulilo, Chinchimane stream.0Namibia (Caprivi Strip)1724C30

Notes: Fast running water, 2 m deep.

-17.87500024.1250004
95600Ottelia ulvifolia subsp. ulvifolia8 Nov 1974B Van de Waal
B Van de Waal 31 JWH Giess WIND
Caprivi: Siambisso. Lianshulu. Side arm of Kwando. Water shallow-flowing.0Namibia (Caprivi Strip)1823A20

-18.12500023.3750002
94439Ottelia ulvifolia subsp. ulvifolia1 Mar 1975B Van de Waal
B Van de Waal 45 JWH Giess WIND
Caprivi: Katima Mulilo. Temporary hole near Liambezi lake (Bukalo).0Namibia (Caprivi Strip)1724C40

-17.87500024.3750004
95288Piliostigma thonningii16 Jun 1971JWH Giess
JWH Giess 11415 JWH Giess WIND
Caprivi: Andara. At Dikundu, 19.2 km South of Andara on ploughed Mahango field. On grey-black loamy soil.0Namibia (Caprivi Strip)1821A20

Notes: Multi-stemmed plant, up to 1.80 m high. Shoots from tree stump.

-18.12500021.3750002
95686Potamogeton nodosus7 Nov 1974B Van de Waal
B Van de Waal 35 JWH Giess WIND
Caprivi: Siambiso: plain mulapo - on open area.0Namibia (Caprivi Strip)1823B40

-18.37500023.8750002
94446Potamogeton schweinfurthii1 Nov 1974B Van de Waal
B Van de Waal 44 JWH Giess WIND
Very rare.Caprivi, Katima Mulilo: Liambezi Lake: 30 cm at bank.0Namibia (Caprivi Strip)1724C40

-17.87500024.3750004
94540Striga asiatica1 Mar 1982MAN Müller
MAN Müller 1843 JWH Giess WIND
Caprivi: Lusikili lake.0Namibia (Caprivi Strip)1724D10

Herb; Notes: Perennial herb, growing at edge of lake. Flowers pale blue. Quoted in: Kew Bull. 41(1): 207

-17.62500024.6250004
95328Striga asiatica20 Jun 1971JWH Giess
JWH Giess 11472 JWH Giess WIND
Caprivi: Andara. In grass stand of the Omuramba at Dikundu (19.2 km south of Andara).0Namibia (Caprivi Strip)1821A20

Herb; Notes: Small, up to 15 cm high,herb. Flowers very small, bright vermilion.Quoted in: Kew Bull. 41(1): 207

-18.12500021.3750002


Copyright: The Rwanda flora team, 2024-25

The Rwanda flora team (2025). Flora of Rwanda: Records determined by Giess.
https://www.rwandaflora.com/speciesdata/utilities/utility-display-determinations-by-person.php?person_id=1114, retrieved 13 December 2025

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