縷 - thread

slightest connection; slender connection; sliver (e.g. of hope)

detailed explanation

scarlet pimpernel

detailed explanation

chickweed (Stellaria sp.); stitchwort

cypress vine (Ipomoea quamoclit); cypressvine morning-glory; cardinal creeper

berry catchfly (Silene baccifera); Cucubalus baccifer (former name)

scarlet pimpernel (Anagallis arvensis)

going on and on in tedious detail

sliver of hope; gleam of hope; ray of hope

in detail; minutely; at great length

detailed explanation