Stems caespitose, simple or many branched, 60-150 cm tall, ca. 1 cm in diam., antrorsely setulose, armed with spreading stinging hairs, dense in lower parts, sparser in upper parts.
Very soon after bony fishes first evolved, they branched into two groups — those with flimsy ray-type fins, and those with more meaty appendages that were attached to their bodies by a single strong bone.
That is refuted by the diversification of today's most valuable companies: tech firms that have branched out into driverless cars, cloud computing and so on.
For one, their cells look pretty different. Skeletal muscle tissue has long, multinucleate cells, while cardiac cells are squat, branched out, and interconnected, each one with one or two central nuclei.