Lathyrus pannonicus

Plate 1 figs. a–h · 8 separate observations

Lathyrus pannonicus, photographed by Conrad Altmann — fig. d Conrad Altmann, CC BY 4.0 / obs. 73316858

Lathyrus pannonicus, photographed by Daniel Ellehammer Larsen — fig. e Daniel Ellehammer Larsen, CC BY 4.0 / obs. 195001211

Lathyrus pannonicus, photographed by Stanislav Murashkin — fig. f Stanislav Murashkin, CC BY 4.0 / obs. 192129535

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 25 botanical countries

Native distribution of Lathyrus pannonicus, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.

Region	TDWG code	Continent
Albania	ALB	EUROPE
Austria	AUT
Belarus	BLR
Bulgaria	BUL
Central European Russia	RUC
Czechia-Slovakia	CZE
East European Russia	RUE
France	FRA
Germany	GER
Greece	GRC
Hungary	HUN
Italy	ITA
Krym	KRY
NW. Balkan Pen.	YUG
Poland	POL
Romania	ROM
South European Russia	RUS
Spain	SPA
Ukraine	UKR
Altay	ALT	ASIA-TEMPERATE
Kazakhstan	KAZ
Krasnoyarsk	KRA
North Caucasus	NCS
Tuva	TVA
West Siberia	WSB

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Flowering 136 in flower of 143 examined

94%

95%

100%

Proportion of examined Lathyrus pannonicus in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	0	too few examined
Feb	0	0	too few examined
Mar	4	4	too few examined
Apr	48	51	94%	84% to 98%
May	73	77	95%	87% to 98%
Jun	11	11	100%	74% to 100%
Jul	0	0	too few examined
Aug	0	0	too few examined
Sep	0	0	too few examined
Oct	0	0	too few examined
Nov	0	0	too few examined
Dec	0	0	too few examined

Peak flowering in Jun. Each bar is the share of Lathyrus pannonicus observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 136 of 143 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 9 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Where it actually grows measured, from 467 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	-17.0 °C	-4.5 °C	0.4 °C
Warmest month, mean daily high	22.6 °C	24.8 °C	26.7 °C
Annual rainfall	502 mm	651 mm	1,444 mm
Rainfall in the driest quarter	78 mm	117 mm	234 mm

It is found where winters are severely cold. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 467 research-grade observations of Lathyrus pannonicus that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one. Climate from CHELSA V2.1 (Karger et al. 2017); occurrences from 10.15468/dl.cgje2x.

Also published as 76 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

Lathyrus albus (L.f.) Kitt.
Lathyrus albus subvar. gracilis Rouy
Lathyrus albus subvar. pannonicus (Jacq.) Čelak.
Lathyrus albus subvar. peduncularis Rouy
Lathyrus albus var. pannonicus (Jacq.) Čelak.
Lathyrus albus var. versicolor (J.F.Gmel.) Beck
Lathyrus asphodeloides (Gouan) Gren. & Godr.
Lathyrus asphodeloides var. varius (Hill) Arcang.
Lathyrus asphodeloides var. versicolor (J.F.Gmel.) D.Brândză
Lathyrus austriacus (Crantz) Wissjul.
Lathyrus collinus (J.Ortmann) Landolt
Lathyrus hispanicus (E.Rev.) Bässler
Lathyrus lacaitae Czefr.
Lathyrus lacteus (M.Bieb.) Wissjul.
Lathyrus lacteus (M.Bieb.) Wissjul.
Lathyrus pannonicus f. glaber Širj.
Lathyrus pannonicus f. pilosus Degen
Lathyrus pannonicus f. rhodopeus (Velen.) K.Malý
Lathyrus pannonicus f. rumelicus (Velen.) K.Malý
Lathyrus pannonicus f. sumenii (Daveau) K.Malý
Lathyrus pannonicus f. unijugus (Velen.) K.Malý
Lathyrus pannonicus subsp. albanicus (Širj.) Bässler
Lathyrus pannonicus subsp. austriacus (Crantz) K.Malý
Lathyrus pannonicus subsp. hispanicus (E.Rev.) Bässler

and 52 more.

Sourcesevery claim on this page

World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.