Allium heldreichii       0

Author: Pierre Edmond Boissier (1810-1885)
Family: Amaryllidaceae Subfamily: Allioideae Tribe: Allieae
Genus: Allium
English name: Heldreich's onion
Zone: Mediterranean

Description
This species is from Greece. It occurs in damp, shady rock ledges, 800-2000m, occasionally lower.
Allium heldreichii Observed in Greece by Panayoti Kelaidis (license)
Botanical Description
The bulb is ovoid to ellipsoid, 8-23mm in diameter, with few offsets. The tunics are scarious, light brownish, not splitting into fibers.

There are 2-3 leaves, sheathing 1/4-1/3 of the stem, half as long as to equaling the stem, up to 3mm wide, erect, canaliculate, persistent and green at anthesis. The stem is 20-50cm, erect, rather robust. The spathe is persistent, scarious, 2- or 3-lobed, ovate-lanceolate, acuminate, shorter than umbel.

The umbel is subglobose, fairly dense, 25-40mm wide, 15- to 40-flowered, without bulbils. The pedicels are 4-15mm, subequal to unequal, smooth. The perianth is narrowly campanulate. The segments are 8-10 x 2.5-3.5mm, lanceolate, acute, rose-pink. The stamens are included, dimorphic. The outer filaments are 3-5.5mm, simple. The inner filaments are longer, tricuspidate. The anthers are 1.2-1.5mm, yellow or reddish. The style is 1-3mm. The stigma is entire, contiguous. The capsule is 4-5mm.

References
- Mountain Flora of Greece, Volume 2, Arne Strid. 1991 pag. 713-714. ISBN
References for the genus
- A partial revision of Allium (Amaryllidaceae) in Korea and north-eastern China, Choi, Hyeok Jae and Oh, Byoung Un. Botanical Journal of the Linnean Society 2011 Vol. 167(2) pag. 153-211. ResearchGate
- A preliminary review of Allium subg. Melanocrommyum in Central Asia, Fritsch, Reinhard. Leibniz-Institut fü Pflanzengenetik und Kulturpflanzenforschung Gatersleben (IPK), Gatersleben 2016. DOI
- A revision of the Allium fimbriatum (Alliaceae) complex, McNeal, Dale W. Aliso: A Journal of Systematic and Floristic Botany 1992 Vol. 13(3) pag. 411-426. Address
- Alliorum adhuc cognitorum monographia, Regel E. 1875. Address
- Allium species and varieties, Hamilton P. Traub. Plant Life 1972 Vol. 28(1-4) pag. 63-64. Address
- Amaryllid notes, 1969, Hamilton P. Traub. Plant Life 1969 Vol. 25(1-4) pag. 46-50. Address
- eFloras. eFloras.org Vol. 2 pag. 101086. Allium
- Flora boreali-americana, or, the botany of the northern parts of British America, Hooker, William Jackson, Sir,. 1840 Vol. v.2 pag. 451. Address
- Flora Europaea, T. G. Tutin, V. H. Heywood, N. A. Burges, D. H. Valentine, S. M. Walters, D. A. Webb. 1968 Vol. 5 pag. 49-69. ISBN
- Flora iberica, Santiago Castroviejo. 2010 Vol. 20 pag. 220-273. ISBN
- Flora of North America. Allium
- Flora of Turkey and the East Aegean Islands, P.H. Davies. 1984 Vol. 8. ISBN
- Key to he alliums of Europe, Victor De Janka. Herbertia 1944 Vol. 11-15 pag. 219-226. Address
- Key to the alliums of China, J.M. Xu. Herbertia 1990 Vol. 46(2) pag. 140-162. Address
- Mountain Flora of Greece, Volume 2, Arne Strid. 1991 pag. 701-714. ISBN
- New guatemalan and mexican alliums, Hamilton P. Traub. Plant Life 1968 Vol. 24(2-4) pag. 127-146. Address
- New species of Allium sect. Melanocrommyum from the eastern Mediterranean, Fragman-Sapir, Ori and Fritsch, FM. Herbertia 2011 Vol. 65 pag. 31-50. Address
- Nouveaux mémoires de la Société impériale des naturalistes de Moscou, Moskovskoe obshchestvo liubitelei prirody. 1860 Vol. 12 pag. 214-218. Address
- Proceedings of the American Academy of Arts and Sciences, American Academy of Arts and Sciences. and American Academy of Arts and Sciences. 1862. Address
- Taxonomy of the genus Allium L.: Contributions from IPK Gatersleben, Reinhard M. Fritsch. Herbertia 2001 Vol. 56 pag. 19-50. Address
- Taxonomy of the genus Allium: Contribution from IPK Gatersleben, Fritsch, Reinhard M. Herbertia 2001 Vol. 56(2) pag. 19-50. ResearchGate
- The alliums of British India, Sir Joseph D. Hooker. Herbertia 1945 Vol. 11-15 pag. 73-84. Address
- The genus Allium in the U.S.S.R, A. T. Vvedensky. Herbertia 1944 Vol. 11-15 pag. 65-218. Address
- The genus Ferraria (Iridaceae), Maurice Boussard. Herbertia 1992 Vol. 48(1&2) pag. 17-22. Address
- The taxonomic significance of leaf epidermal micromorphological characters in distinguishing 43 species of Allium L.(Amaryllidaceae) from central Asia, Lin, Chen-Yi and Tan, Dun-Yan and others. Pakistan Journal of Botany 2015 Vol. 47(5) pag. 1979-1988. Address
- Trudy Imperatorskago S.-Peterburgskago botanicheskago sada.Acta Horti Petropolitani, Lenigrad. Botanischeskii sad. and Imperatorskīǐ botanicheskīǐ sad Petra Velikago and Imperatorskii Sankt-Peterburgskii botanicheskii sad. 1875 Vol. 3(2). Address
- More than a pretty face - ornamental “Drumstick Onions” of Allium subg. Melanocrommyum are also potential medicinal plants, Reinhard M. Fritsch, Maia Gurushidze, Jarmila Jedelska and Michael Keusgen. Herbertia 2005 Vol. 60. Address
- Hommes et Plantes. Vol. 60 pag. 42-43. Address
- Phylogenomic evidence provides insights into the phylogeny and speciation patterns in the subgenus Caloscordum (Allium, Amaryllidaceae), Cheng, Rui-Yu and Zhang, Xin-Yue and Tan, Jin-Bo and Sun, Jia-Hui and Zhou, Song-Dong and He, Xing-Jin and Xie, Deng-Feng. Cladistics 2026. DOI
General specifications
Biological type: bulb
Frost resistance: 5ºF
Leaf color: dark green
Flower color: pink
Reproduction mode: hermaphrodite plant whoes flowers produce both male and female gametes
Indexed Seeds of species subject to Phytosanitary Passport The Regional Directorate for Food, Agriculture and Forestry.
Indexed Sensitive to the insect Ditylenchus dipsaci The Regional Directorate for Food, Agriculture and Forestry.

Specifications for the Mediterranean basin
Adult size (h x w): 1,3ft x 0,9ft
Sun exposure: full sun (Sun hours: >6h
Foliage: deciduous in summer
Growth: average
Flowering time from June until August

Specific information for our garden
Planting substrate: 20%Compost+40%Clay+40%Sand
Plant watering: 1x a week pH 6.5
Logical sequence of containers for: Bulbs; 2L forestry pot, 1L container, 25L high container, 145L wide cup
Propagation is done by root division
Sowing instructions
AUTUMN After harvesting the seeds, keep dry for 8weeks at room temperature then keep dry in the fridge at 4°C until sowing. Sow the seeds at 2mm depth in the Bulb Substrate between 68-77°F. During germination keep the substrate moist and in daylight. The seeds germinate in 2-3 weeks. The viability of the seeds, kept under good conditions, is 3 years.
The average seed weight is 775,2 per gram (0,00129g).

Germination references for the genus
- Perennial seed germination information, Kootenay Local Agricultural Society . 2008. Address
- Seed germination theory and practice, Deno Norman C. 1993. Address


Bulb planting instructions
Plant the bulbs under 7cm Bulb Substrate at 15cm distance. Plant between juil-sept.
Experiences in the garden
10-04-19A Obtaining seeds from seed provider Plant World Seeds collected in '....'. (Cultivated from unknown origin)
22-05-19 Sown 17 seeds in a tray, they did not geminate in Serre4.
Protocol: Spring 2mm Sowing mix+Sand 68-77°F Damp substrate+Light