Flowering plant magnoliid (2%) clades. The remaining 5 clades contain a little over 250 species in total; i.e. less than 0.1% of flowering plant diversity, divided among 9 families. The 43 most-diverse of 443 families of flowering plants by species, in their APG circumscriptions, are Of these, the Orchidaceae, Poaceae, Cyperaceae, Araceae, Bromeliaceae, Arecaceae, and Iridaceae are monocot families; Piperaceae, Lauraceae, and Annonaceae are magnoliid dicots; the rest of the families are eudicots. Double fertilization refers to a process in which two sperm cells fertilize cells in the ovule. This process begins when a pollen grain adheres to the stigma of the
Portia labiata 4 millimetres below a leaf. The spider lies head down, and often slides down 20 to 30 millimetres during moulting. "Portia"s spin a similar temporary web for resting. "P. labiata" is found in Sri Lanka, India, southern China, Burma (Myanmar), Malaysia, Singapore, Java, Sumatra and the Philippines. The populations of "P. labiata" in Los Baños and in Sagada, both in the Philippines, have different environments: Los Baños is a low-lying tropical rainforest where there are many species of spiders, some of which are especially dangerous to "P. labiata"; and Sagada is at higher altitude, with pine-forest and fewer species of