NOTICE. 



Dr. H. HoTTMA-NN and Dr. EaoN Ihnb of G-iessen, who are 

 engaged in preparing a map of the plant-phaenology of Europe, 

 are desirous of obtaining accurate dates of the flowering and 

 fruiting of the undermentioned plants in this country, from 

 as many localities as possible. The observations are to be made 

 (on isolated trees, not protected by walls, nor trained in espalier) 

 during the present year, or from previous years, if not already 

 published. An example of the work intended may be seen in a 

 map published in Petermann's OeograpMsche Mittheilungen for 

 January 1881, entitled " Vergleichende phsenologische Karte 

 von Mittel-Europa." The dates are the average observed at 

 Griessen. 



A. First Jloioers open. 



*1. Ribes rubrum. Red Currant April 14 



2. Prunus avium. Wild Cherry „ 19 



*3. P. spinosa. Sloe, or Blackthorn „ 20 



4. P. Padus. Bird Cherry „ 24 



6. Pyrus communis. Pear „ 23 



7. P. Malus. Apple „ 28 



*8. Syringa vulgaris. Lilac May 4 



9. Lonicera tatarica. Tartarian Honeysuckle „ 4 



10. Narcissus poeticus. Pheasant's-ej'-e Narcissus „ 5 



*11. Msculus Hippocastanum. Horse- Chestnut „ 7 



12. Cratceyus oxyacantha. Hawthorn „ 9 



13. Cytisus Laburnum. Laburnum „ 15 



14. Sarothamnus vulgaris. Broom „ 14 



15. Cydonia vulgaris. Quince „ 16 



16. Sorbus Aucuparia. Mountain Ash, or Rowan „ 17 



*17. Sambucus nigra. Elder „ 28 



18. Secale cereale. Rye „ 28 



19. Atropa Belladonna. Deadly Nightshade „ 29 



20. Vitis vinifera. Vine June 15 



21. Tilia grandifolia, Ehrh. Lime ,, 22 



*22. Lilium candidum. White Lily July 1 



B. First fruit ripe. 



23. Ribes rubrum. Red Currant June 21 



24. Lonicera tatarica. Tartarian Honeysuckle July 1 



25. Sorbus Aucuparia. Mountain Ash, or Rowan „ 30 



26. Atropa Belladonna. Deadly Nightshade August 2 



*27. Sambucus nigra. Elder „ 11 



28. jEscuIus Hippocastanum. Horse-Chestnut Sept. 17 



Particular attention is requested to the species indicated by an 

 asterisk. Communications to be addressed to Dr. Ihio;, Griessen, 

 Germany. 



