nature linear icon set. includes thin line shadbush tree, spruce tree, bitternut hickory tree, black walnut eastern cedar pine

nature icon vector set slippery elm tree spruce line symbol web hawthorn bitternut hickory black willow walnut sign linear honeylocust eastern cedar pine red pack thin flat outline redcedar illustration filled locust forest seed winter summer season leaf foliage oak birch flora branch beautiful plant garden botanical holiday christmas