Winter Twigs, page 3

Identifier3.24632

TypeDrawing

Date created1943

DescriptionPage 3 of 4, illustrations showing identifying characteristics of different types of winter twigs with identifying labels and text above each, created to accompany "Winter Twigs" article featured in Morton Arboretum Bulletin of Popular Information.  Some original identifying text has detached and is no longer present.

Illustrations are divided into seven sections, depicted from top to bottom, left to right:

1) TREES WITH  THORNS

• Honey locust -- Gleditsia triacanthos
• Black locust -- Robinia pseudo-acacia
• Osage orange -- Maclura pomifera
• Hawthorn -- Crataegus 

2) TREES WITH THORN-LIKE TWIGS

• Wild crab -- Malus ioensis [and] Malus coronaria
• Wild plum : Prunus americana [and] Prunus nigra

3) TREES WITH KNOB-LIKE TWIGS

• European larch -- Larix decidua
• Tamarack -- Larix laricina 
• Ginkgo -- Ginkgo biloba 

4) TREES WITH CLUSTERED TERMINAL BUDS

• Black Oak Group
  • Red oak -- Quercus borealis maxima
  • Northern pin oak -- Quercus ellipsoidalis
  • Pin oak -- Quercus palustris 
• White Oak Group
  • Bur Oak -- Quercus macrocarpa
  • White oak -- Quercus alba
  • Swamp white oak -- Quercus bicolor

5) TREES WITH LINE (Stipule Scar) ENCIRCLING TWIG AT EACH NODE

• Tulip [tree] -- Liriodendron tulipifera
• Sycamore -- Platanus occidentalis

6) THICK TWIGS WITH THICK PITH 

• Kentucky coffee tree -- Gymnocladus dioicus
• Tree of heaven -- Ailanthus altissima
• Staghorn sumac -- Rhus typhina  
• Smooth sumac -- Rhus glabra

7) BUDS WITH A SINGLE SCALE 

• Willow -- Salix

Appeared InMorton Arboretum Bulletin Of Popular Information, Vol. 18, no. 11, p. 61-64.

LanguageEnglish