Forbes s.n., Durban (1921)

Forbes herbarium gathering, Durban, labelled Insangu (1921)
Forbes s.n., Durban (1921)
At a Glance
Classification	Unknown
Location
Country	South Africa
Province/State	KwaZulu-Natal
Locality	Durban
Coordinates	-29.86, 31.01
Point type	Settlement point
Uncertainty	about 10 km
Traditional Names
Local Name	Insangu
Collection
Method	Herbarium specimen
Sourcing Type	Historical
Date	24 March 1921
Collector	H. Forbes
Specimen
Repository	Compton Herbarium (NBG)
Catalogue Number	NBG1533367-0
Collector Number	s.n.(STEU13050)
Scientific Name	Cannabis sativa L.

Year at a glance (computed)

Point

29.86° S, 31.01° E

Elevation used

13 m computed, GMTED2010 (1 km), at this point

Köppen class

Cfa

Clock

UTC+2

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Day and night
First light	04:42	05:11	05:33	05:50	06:08	06:23	06:24	06:05	05:31	04:54	04:27	04:22
Sunrise	05:09	05:36	05:56	06:15	06:33	06:49	06:50	06:30	05:55	05:18	04:53	04:50
Sunset	19:00	18:44	18:14	17:38	17:11	17:03	17:14	17:31	17:48	18:05	18:29	18:53
Last light	19:27	19:09	18:38	18:02	17:36	17:29	17:39	17:56	18:12	18:29	18:55	19:20
Daylighth	13h51	13h08	12h18	11h23	10h38	10h14	10h23	11h01	11h53	12h47	13h37	14h03
Changemin/day	−1.0	−1.7	−1.8	−1.7	−1.2	−0.2	+0.8	+1.5	+1.8	+1.8	+1.4	+0.3
Temperature
Avg daily high°C	26	27	26	25	24	22	22	22	22	23	24	25
Avg daily low°C	22	22	21	19	17	14	14	15	16	18	19	20
Swing°C	5	5	5	6	6	7	8	7	6	5	5	5
Water and light
Rainmm	124	113	92	57	42	24	35	42	65	95	109	116
VPDkPa	1.1	1.1	1.1	1.0	0.9	0.8	0.8	0.8	0.9	0.9	1.0	1.0
Sunlightmol/m²/d	43	41	36	30	26	23	24	29	33	37	40	43
Field cycle
Cycle

• Planting
• Growing
• Harvest
• Not recorded / off season

No field cycle is recorded on this accession's page.

Day and night computed from the sun's position on the 15th of each month; climate normals 1981–2010 from CHELSA V2.1 · About these figures

Forbes s.n., Durban is a herbarium accession of Cannabis sativa collected at Durban in KwaZulu-Natal, South Africa, on 24 March 1921 by H. Forbes. The Compton Herbarium (NBG) holds the sheet as NBG1533367-0. Its locality adds the isiZulu name for the plant.

Collection and locality

The database gives the date as 24 March 1921 and the locality as Durban. "Insangu". The quotation marks are the catalogue's own. The name Insangu stands in the locality.

The name on the entry

The same name is written Insangu on the field tag of Mayr 116 (1890 to 1910), a Bews Herbarium (NU) sheet dated 1890 to 1910, and on the label of Kew's Zululand smoking pipe, the artefact EBC 67634. The Royal Botanic Gardens, Kew received a sheet from the Reverend Dr Callaway in 1857 under the name Insango, Callaway s.n., Natal (1857). Bryant's Zulu–English dictionary of 1905 enters the Zulu name for wild hemp as i-nTsangu.^: 645

Specimen and identification

The sheet is filed as Cannabis sativa L. The number is given as s.n.(STEU13050): there is no collector's number, and the parenthesis is a Stellenbosch University herbarium number, so the sheet appears to have reached the Compton by way of STEU.