Drosera Spatulata

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Plant of the Month - October by Allan Carr Drosera spatulata Spoon-leaved Sundew Pronunciation: DROSS-er-a spat-ewe-LAH-ta DROSERACEAE Derivation: Drosera: from the Greek droseros (dewy) – refers to the droplets on the glandular hairs; spatulata: from the Latin spatulate (shaped like a spatula) – refers to the spoon-shaped leaves. Habit with numerous flower stalks Leaves forming a rosette Drosera is a large genus of about 100 species distributed in temperate and tropical parts of the world. They are well developed in Australia with about 54 named species and many more waiting to be described. Forty-two species are known from the south-west of WA and the rest occur in the eastern states and tropical areas. They are carnivorous and trap small insects with glandular hairs mostly on the upper surface of the leaves. Enzymes break down the insect’s protein and the resulting solution is absorbed by the leaf. This aids the plant’s nutrition but is not essential. However, the extra nutrition may be significant in flower and seed production. Description: Drosera spatulata belongs to a group of rosetted sundews, small perennial herbs with a basal rosette of leaves. This sundew has a wide distribution across Asia, Australia and New Zealand in moist, sandy locations - seepage sites, stream banks and wetland areas. Leaves in a basal rosette to 40 mm in diameter are spoon-shaped with glandular hairs that are pressure sensitive. These hairs move inwards and downwards when touched, trapping tiny creatures. Leaf colour may vary from a light creamy, green to a deep red. Flowers up to 6 mm across are usually borne from August to May on stems to 200 mm and can be pink or white. Fruits are small black capsules with many tiny seeds. Carnivorous plant growers consider D. spatulata to be a weed because it is very hardy and produces copious amounts of seed after flowering. The seed also germinates readily, causing plants to pop up in surrounding pots. Flower .

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Carnivorous Plant Newsletter V44 N4 December 2015
Technical Refereed Contribution Photoperiod regulates Cape Sundew (Drosera capensis) gland secretion and leaf development Wang Dong-Hui • College of Life Science • Peking University • Haidian • Beijing 100871 • PRC Wang Dong-Qi • Cui Yi-Wei • Yang Lu • Gu Xiao-Di • Song Wen-Fei • Li Feng • The High School Affiliated to Renmin University of China • Haidian • Beijing 100080 • PRC • lifeng2004@pku. edu.cn Keywords: carnivorous plant, photoperiod, plant development, Drosera capensis. Abstract: Cape Sundew (Drosera capensis), a carnivorous plant that catches flies with sticky mu- cus, has attracted great interest among botanists and horticulture hobbyists since the Darwin era. But little is known about how this carnivorous plant regulates morphogenesis and organ formation to accommodate environmental changes. In this article we present the relationship between gland secretion of Cape Sundew and photoperiod utilizing various physiological and morphological meth- ods. We show that Cape Sundew grows faster and secretes more mucus under long days than under short days. Under long days leaf length and the blade\petiole ratio increases, leading to increased fly catching capacities. More importantly, in the short term, the rhythm of photoperiod causes Cape Sundew to secrete mucus independent of photo intensity. Introduction As one of the most special plant groups, carnivorous plants perform photosynthesis and feed on insects and some large carnivorous plants even prey on birds and small mammals. Darwin believed that a carnivorous plant was one of the most astonishing phenomena in the world (Dar- win 1875; Ellison & Gotelli 2009). Carnivorous plants are represented by more than 600 species belonging to 20 genera (Ellison & Gotelli 2001; McPherson 2010).
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