| DIATOM | Girl with a miniscule constituent of a type of algae |
| AGREE | "We can all _, 5 Down has a miniscule 48 Across" (5) |
| BLOOM | A flower; a rosy colour; a healthy glow on one's cheeks; a fine powdery coating on chocolate, grapes or plums; or, a rapid seasonal flourish of algae (5) |
| PHRASE | An expression consisting of one or more words forming a grammatical constituent of a sentence. (6) |
| SOCIALUNIT | Individual, dyad etc as a constituent of a larger group (6,4) |
| GORGONZOLA | Traditional constituent of a quattro formaggi pizza |
| ELEMENT | Fundamental constituent of a whole |
| ATOM | Constituent of a molecule |
| PREDICATE | One of the two main constituents of a sentence, containing the verb and its complements (9) |
| LATVIAN | Valiant constituents of a recently liberated state |
| STOCHASTIC | Being governed by chance upset constituents of a Scottish Conservative (10) |
| RIDGE | Dirge upsets constituents of a narrow elevation (5) |
| CRYPTOGAM | Consisting of algae, bryophytes (mosses/liverworts), pteridophytes (ferns/horsetails) and fungi, a c |
| REDALGAE | A group of algae that have predominantly red pigment (3,5) |
| AETHER | Fragment of algae therapy once used as an anaesthetic by a poet (6) |
| STEPS | Keep these clear of algae and moss to avoid a nasty fall (5) |
| TOMTHUMB | Miniscule character of English folklore (3,5) |
| TINY | Container, at the end of the day, is miniscule |
| AGAR | Colloidal extract of algae; used especially in culture media and as a gelling agent in foods (4) |
| MAERL | Mass of algae in many sheets over lake |