Rogers 1401 (1909)

Rogers 1401 herbarium gathering, Johannesburg (1909)
Rogers 1401 (1909)
Rogers 1401, the sheet held by the Herbarium of the University of Zurich as Z-000164603
At a Glance
Classification	Unknown
Location
Country	South Africa
Province/State	Gauteng
Locality	Johannesburg
Coordinates	-26.21844, 28.041622
Point type	Holder's georeference
Uncertainty	about 12 km
Collection
Method	Herbarium specimen
Sourcing Type	Historical
Date	February 1909
Collector	F. A. Rogers
Specimen
Repository	Herbarium of the University of Zurich
Catalogue Number	Z-000164603
Collector Number	Rogers, F.A. 1401
Scientific Name	Cannabis sativa L.

Year at a glance (computed)

Point

26.22° S, 28.04° E

Elevation used

1,738 m computed, GMTED2010 (1 km), at this point

Köppen class

Cwb

Clock

UTC+2

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Day and night
First light	05:03	05:29	05:46	06:00	06:14	06:28	06:30	06:14	05:42	05:09	04:46	04:44
Sunrise	05:29	05:53	06:09	06:23	06:39	06:53	06:55	06:37	06:05	05:33	05:11	05:10
Sunset	19:05	18:52	18:25	17:52	17:29	17:23	17:33	17:48	18:01	18:14	18:35	18:56
Last light	19:30	19:16	18:49	18:16	17:54	17:48	17:58	18:12	18:24	18:37	18:59	19:22
Daylighth	13h36	12h59	12h16	11h29	10h51	10h30	10h38	11h11	11h55	12h41	13h24	13h46
Changemin/day	−0.8	−1.4	−1.6	−1.4	−1.0	−0.2	+0.7	+1.3	+1.5	+1.5	+1.2	+0.3
Temperature
Avg daily high°C	24	24	22	20	18	15	16	19	22	23	23	24
Avg daily low°C	14	14	12	9	5	2	2	4	8	10	12	13
Swing°C	10	10	11	11	13	13	14	14	15	13	11	11
Water and light
Rainmm	146	124	108	41	16	10	3	8	24	85	110	144
VPDkPa	0.9	0.9	0.8	0.8	0.7	0.6	0.6	0.7	0.9	0.9	0.9	0.9
Sunlightmol/m²/d	49	46	40	35	31	28	30	36	43	46	48	50
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

Rogers 1401 is a herbarium accession of Cannabis sativa collected at Johannesburg in Gauteng, South Africa, in February 1909 by F. A. Rogers. The Herbarium of the University of Zurich holds the sheet as Z-000164603.

The label

The sheet carries a printed label headed FLORA OF S. AFRICA. reading Coll. Rev. F. A. ROGERS. No. 1401, with Cannabis sativa L and Johannesburg written by hand and the date Feb, 1909 below. A second printed label records that the herbarium of the Reverend F. A. Rogers was acquired by the Botanical Museum of the University of Zurich in 1930, and an accession stamp gives 22 February 1932.

Specimen and identification

The determination is Cannabis sativa L. No determiner is named.