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 septiembre 19, 2023 05:32 TARDE por srall srall

Comentarios

Thanks so much for this!

Publicado por trumpetchris hace 10 meses

Great summary. Thanks!

Publicado por joekaz hace 10 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.

Publicado por danielatha hace 10 meses

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

Publicado por srall hace 10 meses

Thanks for this, Sara!

Publicado por sadawolk hace 10 meses

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