Crossword-Solution: ENDOGENS 8 letters, 1 clue 🏆 scrabble score: 10

But in addition to reasons founded on structure, I have this theoretical one, that it is as requisite that Endogens should establish a similar relation with Acrogens; otherwise a gradation exists between the first and third classes, and none between the second and third, between which, gradations ought to be the more frequent.

The botanical classifications based upon morphology are so frequently Saponin is found in endogens and exogens.

The botanists call them 'two-suckered,' and can't be content to call them _that_ in English; but drag in a long Greek word, meaning the fleshy sucker of the sea-devil,--'cotyledon,' which, however, I find is practically getting shortened into 'cot,' and that they will have to end by calling endogens, monocots, and exogens, bicots.

Henslow also suggests that endogens have originated from exogenous plants through self-adaptation to an aquatic habit,[256] which is in line with our idea that certain classes of animals have diverged from the more primitive ones by change of habit, although this has led to the development of new class-characteristics by use and disuse, phenomena which naturally do not operate in plants, owing to their fixed conditions.

Since his arrival on Texan ground, he had devoted much attention to the study of the _cactaceae_; and now having reached Mexico, the home of these singular endogens, he might be said to have gone cactus-mad.