Words that specify circadian rhythms of natural organisms

During my life as a biologist I commonly have used the words nocturnal (organisms active during night), diurnal (organisms active during day), and to a lesser degree vespertine (organisms active in the evening) and crepuscular (organisms that are active during twilight, both at dawn and at dusk), but I was looking for a word that would define morning activity. So, I discovered that there is a well-known word in various Romanic languages that is matutinal (see the Wikipedia article). Becoming aware of matutinal inspired me to discuss these particular rhythms. These activities are a part of what is known as circadian rhythm (24-hours cycle of metabolism and behaviour).
Example of nocturnal organisms would be various Cereus cacti, which bloom on sun-down and remain open until the morning sun comes up. From the animal world an example of nocturnal organisms would be cats, with exception of cheetah, which is a diurnal hunter. Typically nocturnal birds will be owls, barn owls and nighthawks.
Many plants are diurnal, like California poppy. Some plants will have flowers open only during mid-day like Iceplant Mesembryanthemum (Latin generic name describes it very well: mid-day flower) (family Aizoaceae). Meerkats are typical diurnal animals.
I know of no crepuscular plants, because pollen is released only one time per day, so they are either diurnal, nocturnal, vespertine or matutinal. Among crepuscular animals could be mentioned skunks, flying foxes, which usually fly early in the evening, but feed early in the morning, larger body moths are active in the evening and can generate enough of internal heat by shivering to be active during cool mornings, particularly families Noctuidae and Sphingidae.
In tropical and subtropical regions insectivorous animals are mostly vespertine, while fruit and leaf eaters are tend to be mostly nocturnal. Many plants are vespertine as well, like 4 o'clock Mirabilis , Talinum, evening primrose - many of the species of the genus Oenothera etc.
The majority of flowering plants are matutinal, because they release pollen in the morning. As examples could serve corn, chicory and various species of flowering cacti. Pollinators of matutinal plants are closely associated with them and therefore they are also matutinal (or matinal - the term used in entomology): bees and wasps.

Personal observations on human physiology: a hint to the wise

I am sure we all have experienced a situation where a group of people are dining at a table and one person begins to cough and gag on a piece of food while eating. Immediately somebody will jump up and bring a glass of water to the inflicted person in good faith, but not realizing that it is the wrong thing to do. When food particle is drawn in trachea a reaction is almost instantaneous, the mucus immediately begins to accumulate around the foreign particle to coat it allowing it to be transported out by continuously moving minute cilia, known medically as pseudostratified ciliated columnar epithelium cells. If water is flushed over the surface of epiglottis it would remove much of the mucus, which is supposed to facilitate the further removal of this foreign object and deliver it to the throat, where it can be swallowed. Thus, in such case just let the natural forces correct the problem and don't interfere with water.

Disambiguation of Chia

Under the common name Chia 2 distinctly different plants are known: Salvia hispanica , described by Linnaeus in 1753, and Salvia columbariae, described by Bentham in 1833. Salvia hispanica is native to Central America, while Salvia columbariae is native of arid South-West of the USA and adjacent Mexico. Both used to be very important food plants, but today only Salvia hispanica remains in active production as far as we know. the choice of the scientific names contributes to confusion. Linnaeus doubtless was aware that the use S. hispanica was misleading, suggesting that it was Spanish plant, by the use of word hispanica meaning Spain. Perhaps, in my humble opinion, the only specimens he had in had were derived from Spain - a cultivated plant, not knowing that it originated from Central America. In S. columbariae was mentioned that doves (family Columbidae) were observed as frequent visitors of this plant at time of seed maturity.