 | American Philosophical Society - 1896
...species, curved, thus enabling the weak stem to climb and carry its leaves out of harm's way. Spinel, that are sharp-pointed abortive branches, serving...officinale). Stinging hairs, as in the common nettles (Urtiea dioica, and U. urens). In these cases the stinging hairs are mixed on the leaves and stem with... | |
 | Smithsonian Institution. Board of Regents - 1898 - 940 pages
...blackthorn (Primus spinosa). Rigid hairs on leaves and stem, as in the borage (Borayo officinalin) and comfrey (Symphytum officinale}. Stinging hairs, as in the common nettles ( Urtica dioica and U. wrens). In these cases the stinging hairs are mixed on the leaves and stem with ordinary rigid hairs,... | |
 | Smithsonian Institution. Board of Regents - 1898 - 942 pages
...branches, serving the same purpose as prickles, as in the common sloe or blackthorn (Prunus spinosa). Eigid hairs on leaves and stem, as in the borage (Borago officinalis) and comfrey (Symphytiim officinale). Stinging hairs, as in the common nettles ( Urtiea dioica and U. urens). In... | |
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... thus prevent the nibblings of animals, or in more advanced species, curved, thus enabling the weak stem to climb and carry its leaves out of harm's way. Spines, that are sharp-pointed abortive branches, serving the same purpose as prickles, as in... 