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Palms

Palms. Most Widely Cultivated Urban Trees. Southern Magnolia ( Magnolia grandiflora ) Blue Gum ( Eucalyptus globulus ) Mexican Fan Palm ( Washingtonia robusta ). Palms. Trunks grow taller not thicker Do not grow annual rings of wood Monocot Most are frost tender

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Palms

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  1. Palms

  2. Most Widely Cultivated Urban Trees • Southern Magnolia (Magnolia grandiflora) • Blue Gum (Eucalyptus globulus) • Mexican Fan Palm ( Washingtoniarobusta)

  3. Palms • Trunks grow taller not thicker • Do not grow annual rings of wood • Monocot • Most are frost tender • All leaves arise from one apical bud • Single unbranched stem

  4. Feather and Fan Palms

  5. Palms • Feather Palms-Pinnately divided leaves • Lower leaflets with or without spines • Fan Palms-palmately divided leaves • Petiole margins lined with spiny teeth or petiole margins not armed

  6. Feather Palms(pinnately lobed fronds)

  7. JubaeachilensisChilean Wine Palm

  8. JubaeachilensisChilean Wine Palm • Feather Palm • Pinnately divided leaves • Lower leaflets without spines • Trunk larger than 3 feet at maturity

  9. Phoenix canariensisCanary Island date palm palm family, Arecaceae Native to Canary Islands Big, heavy trunked, to 60 ft. Hardy to 20 degrees, tolerates seacoast conditions where warm enough Dying in Los Angeles; succumbing to Fusarium wilt, a fungal disease Brought to California by the Mission Fathers

  10. Phoenix canariensisCanary Island date palm palm family, Arecaceae • Fronds deep green with many leaflets • no petiole --spiky leaflets all the way to base of frond • Young fronds very stiff-spiny

  11. Young fronds very stiff-spiny!

  12. Phoenix dactylifera, Date palm

  13. Date PalmPhoenix dactylifera • 17 species native to tropical africa and asia • 6 of these species cultivated in North America • Date Palms grown commercially in California and Arizona

  14. Phoenix dactylifera‘Deglet Noor’, Deglet Noor date palm

  15. Phoenix dactylifera, Date palmPalm family, Arecaceae Feather-leaf, leaflets sharp-tipped, pale green and held stiffly on top of palms large and stiff for small gardens; dates formed only on female plant if plant mature and male is present; likes water (desert oases in Middle East); THIS is the palm of Hilltop Drive (P. dactylifera‘DegletNoor’)

  16. Fan Palms(palmately lobed fronds)

  17. ChamaeropshumilisMediterranean fan palmpalm family, Arecaceae Clumping palm, to 20 x 20 ft (piranhas run in schools) Survives 0 degrees briefly Use in containers, mass under trees, hedge; takes poor soil and strong winds, regular water

  18. Chamaeropshumilis, Mediterranean fan palm“piranha teeth”

  19. ChamaeropshumilisMediterranean fan palm ID: fan leaves cut at least 2/3 of way to stalk—palmately lobed teeth on frond stalk are long and widely-separated (piranha teeth)

  20. Washingtoniarobusta, Mexican fan palmpalm family, Arecaceae

  21. Tall plant, to 100 ft., trunk slim and maybe curved, compact head of foliage, good for large properties, avenues, parkways • Hardy to 20 degrees; damaged in the cold winter, but OK if in ground Washingtoniarobusta, Mexican fan palmpalm family, Arecaceae

  22. Washingtoniarobusta, Mexican fan palm ID: Palmate leaf divided about 1/3 to ½ of way to leaf stalk Leaf stalk heavily toothed, teeth often golden (“shark tooth”)

  23. Washingtonia robusta, Mexican fan palmpalm family, Arecaceae “ Washingtonia palms are well known for being a large apartment complex for all sorts of vermin from rats and mice, spiders and scorpions and all sorts of birds” Most widely grown palm tree

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