Lansdell 862 (1920)
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| Lansdell 862 herbarium gathering, Groenkloof, Pretoria (1920) | |
|---|---|
| Lansdell 862 (1920) | |
| At a Glance | |
| Classification | Unknown |
| Location | |
| Country | South Africa |
| Province/State | Gauteng |
| Locality | Groenkloof |
| Coordinates | -25.625, 28.125 |
| Point type | Holder's georeference |
| Uncertainty | about 19 km |
| Collection | |
| Method | Herbarium specimen |
| Sourcing Type | Historical |
| Date | 11 April 1920 |
| Collector | K. A. Lansdell |
| Specimen | |
| Repository | National Herbarium (PRE) |
| Catalogue Number | PRE0372426-0 |
| Collector Number | Lansdell, K.A. 862 |
| Scientific Name | Cannabis sativa L. var. sativa |
- Point
- 25.62° S, 28.12° E
- Elevation used
- 1,276 m computed, GMTED2010 (1 km), at this point
- Köppen class
- Cwa
- Clock
- UTC+2
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Day and night | ||||||||||||
| First light | 05:04 | 05:29 | 05:46 | 05:59 | 06:13 | 06:26 | 06:28 | 06:13 | 05:42 | 05:10 | 04:47 | 04:45 |
| Sunrise | 05:29 | 05:53 | 06:09 | 06:23 | 06:37 | 06:51 | 06:53 | 06:36 | 06:05 | 05:33 | 05:12 | 05:11 |
| Sunset | 19:03 | 18:51 | 18:25 | 17:53 | 17:30 | 17:24 | 17:34 | 17:48 | 18:00 | 18:13 | 18:33 | 18:54 |
| Last light | 19:29 | 19:14 | 18:48 | 18:16 | 17:54 | 17:49 | 17:58 | 18:12 | 18:23 | 18:36 | 18:58 | 19:20 |
| Daylighth | 13h34 | 12h58 | 12h16 | 11h30 | 10h53 | 10h33 | 10h41 | 11h12 | 11h55 | 12h40 | 13h21 | 13h43 |
| Changemin/day | −0.8 | −1.4 | −1.5 | −1.4 | −1.0 | −0.2 | +0.7 | +1.3 | +1.5 | +1.5 | +1.1 | +0.2 |
| Temperature | ||||||||||||
| Avg daily high°C | 28 | 28 | 26 | 24 | 22 | 19 | 19 | 22 | 26 | 27 | 27 | 28 |
| Avg daily low°C | 17 | 17 | 16 | 12 | 9 | 6 | 5 | 8 | 11 | 14 | 15 | 16 |
| Swing°C | 11 | 11 | 11 | 11 | 13 | 13 | 14 | 14 | 15 | 13 | 12 | 11 |
| Water and light | ||||||||||||
| Rainmm | 122 | 96 | 87 | 33 | 14 | 8 | 3 | 5 | 15 | 67 | 91 | 115 |
| VPDkPa | 1.2 | 1.2 | 1.1 | 1.0 | 0.8 | 0.7 | 0.7 | 0.9 | 1.2 | 1.2 | 1.2 | 1.2 |
| Sunlightmol/m²/d | 49 | 46 | 41 | 36 | 32 | 29 | 31 | 36 | 44 | 47 | 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
Lansdell 862 is a herbarium accession of Cannabis sativa collected at Groenkloof in Gauteng, South Africa, on 11 April 1920 by K. A. Lansdell. The National Herbarium (PRE) holds the sheet as PRE0372426-0.[1]
Collection and locality
The database gives the locality as PRETORIA; GROENKLOOF and the date as 11 April 1920.[1]
A second sheet, dated 1973
The KwaZulu-Natal Herbarium (NH) holds a sheet under the same collector and the same number, NH0050384-0, at Groenkloof Pretoria., and dates it 1973. Fifty-three years separate the two dates for one collector's number 862. The 1973 date is far more likely to be the year the sheet was registered at Durban than the year the plant was gathered, but the catalogues do not say so and neither date is corrected here.[1]
Specimen and identification
Both sheets are filed as Cannabis sativa L. var. sativa.[1]
- ↑ 1.0 1.1 1.2 1.3 "Cannabis sativa L., barcode PRE0372426-0, in the Botanical Database of Southern Africa (BODATSA)". Plants of southern Africa. South African National Biodiversity Institute. Retrieved 23 September 2026.