Rubus in New Jersey

(these are just my notes; I am not an expert)
In New Jersey we have:

Wineberry (R. phoenicolasias): fuzzy red stems

Black raspberry (R. occidentalis): blue-gray, round stems

(Red raspberry) (R. idaeus) (mostly north of NJ): blue-green or red-green, round stems

Cut-leaved blackberry (R. laciniatus): deeply lobed leaflets

Sand blackberry (R. cunefolius): wedge-shaped, smallish leaflets

Purple flowering raspberry (R. odoratus): leaves not divided, currant or maple-like

Common dewberry (R. flagellaris): trailing with prickles on stems, dull leaves

Swamp dewberry (R. hispidus): trailing with bristles and some prickles on stems, shiny leaves

Common blackberry (R. allegheniensis): fluted stems, flowers in clusters of more than 12, in a raceme, glandular flowerstalks

Pennsylvania blackberry (R. pensylvanicus): fluted stems, flowers in clusters of fewer than 12, not very glandular, not always a raceme and if so a short one.

note: in separating the raspberries: R. idaeus has pinnately compound leaves (you'll see this on the new growth)
while R. occidentilis is virtually always trifoliate.

And obviously the fruit of R. idaeus is red and of R. occidentalis is black.

Publicado el 19 de septiembre de 2023 a las 05:32 PM por srall srall

Comentarios

Thanks so much for this!

Anotado por trumpetchris hace 7 meses

Great summary. Thanks!

Anotado por joekaz hace 7 meses

Great post. Thanks for sharing the info. Rubus are challenging and it's great to have more insights and field id characters.

It's possible Rubus caesius (European Dewberry), Rubus armeniacus (Armenian
Blackberry), Rubus dalibarda (Dewdrop), Rubus pubescens (Dwarf Raspberry) and Rubus bifrons (Himalayan Blackberry) also occur in New Jersey.

Anotado por danielatha hace 7 meses

Well, I was focusing on ones I've photographed...R. armeniacus and R. bifrons can be really challenging when separating "blackberries".

Anotado por srall hace 7 meses

Thanks for this, Sara!

Anotado por sadawolk hace 7 meses

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