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Water Jacket

Lycium andersonii

Lycium andersonii is a species of flowering shrub in the nightshade family, Solanaceae. Its common names include water-jacket, redberry desert-thorn, Anderson thornbush, Anderson's desert thorn, Anderson boxthorn, Anderson lycium, Anderson wolfberry, and squawberry.

It is native to the Southwestern United States and northwestern Mexico, where it is distributed in New Mexico, Arizona, California, Nevada, Utah, Baja California, Sinaloa, and Sonora. It grows in many habitat types and plant communities, including pinyon-juniper woodland, creosote bush scrub, sagebrush scrub, chaparral, and coastal sage scrub.

It grows up to about 2.7 metres (8 ft 10 in) in maximum height, with a large fibrous root system that can extend over 9 metres (30 ft) from the base of the plant. The shrub is rounded in shape with many branches covered in many thin spines up to 2 centimetres (0.79 in) long. The flat leaves are thick and fleshy, measuring up to 1.7 centimetres (0.67 in) long. They are shed from the plant in dry conditions. The flowers have funnel-shaped white or purple-tinged corollas up to a centimeter long. The fruit is a red or orange berry less than a centimeter long. One of the main traits of this shrub is a pattern of rotating spike-branches that grow along the main branching stems. The individual spikes get larger and end up as rotating intersecting branches. It's form is dense and thicket-like, often impenetrable even by birds. Berries are produced sometimes in great profusion, sometimes only in external branches, and sometimes not at all. The berries are typically very bitter.

Lycium andersonii typically grows in sandy, gravelly washes and on slopes and mesas. It tolerates some soil salinity and alkaline soils such as caliche. It thrives in hot, dry climates. It is rarely dominant in the local flora. Common associates include creosote bush (Larrea tridentata), yellow palo verde (Parkinsonia microphylla), white bursage, (Ambrosia dumosa), smoke tree (Psorothamnus spinosus), Nevada ephedra (Ephedra nevadensis), hop sage (Grayia spinosa), pale wolfberry (Lycium pallidum), blackbrush (Coleogyne ramosissima), singlewhorl burrobrush (Hymenoclea monogyra), and Joshua tree (Yucca brevifolia).

Heligrass

Melica frutescens

Melica frutescens, woody melicgrass, is a species of grass in the Poaceae family that can be found in such US states as Arizona and California and in Mexico. The species is perennial and have culms that are 75-200 centimetres (30-79 in) long and woody. The species' lateral branches are sparse with leaf-sheaths being scabrous, tubular and closed. It leaf-blades are 2-4 millimetres (0. 079-0. 157 in) wide. It panicle is contracted, linear, and is 12-35 centimetres (4. 7-13. 8 in) long with filiform pedicels that are located on fertile spikelet. The main branches are appressed and carry oblong and solitary spikelets that are 12-18 millimetres (0. 47-0. 71 in) long. They are comprised out of 3-6 fertile florets which are diminished at the apex. It sterile florets are barren, oblong, growing in a clump and are 4. 5-6. 5 millimetres (0. 18-0. 26 in) long. The species' fertile lemma is chartaceous, keelless, oblong and is 8-11 millimetres (0. 31-0. 43 in) long. Both lower and upper glumes are chartaceous, elliptic and keelless with acute apexes. Their size is different though; Lower glume is 7-12 millimetres (0. 28-0. 47 in) long while the upper one is 9-15 millimetres (0. 35-0. 59 in) long. Flowers are fleshy, oblong, truncate and grow together. They also have 3 anthers with fruits that are caryopses and have an additional pericarp. The species is perennial and have culms that are 75-200 centimetres (30-79 in) long and woody. The species' lateral branches are sparse with leaf-sheaths being scabrous, tubular and closed. It leaf-blades are 2-4 millimetres (0. 079-0. 157 in) wide. It panicle is contracted, linear, and is 12-35 centimetres (4. 7-13. 8 in) long with filiform pedicels that are located on fertile spikelet. The main branches are appressed and carry oblong and solitary spikelets that are 12-18 millimetres (0. 47-0. 71 in) long. They are comprised out of 3-6 fertile florets which are diminished at the apex. It sterile florets are barren, oblong, growing in a clump and are 4. 5-6. 5 millimetres (0. 18-0. 26 in) long. The species' fertile lemma is chartaceous, keelless, oblong and is 8-11 millimetres (0. 31-0. 43 in) long. Both lower and upper glumes are chartaceous, elliptic and keelless with acute apexes. Their size is different though; Lower glume is 7-12 millimetres (0. 28-0. 47 in) long while the upper one is 9-15 millimetres (0. 35-0. 59 in) long. Flowers are fleshy, oblong, truncate and grow together. They also have 3 anthers with fruits that are caryopses and have an additional pericarp.

Sand Blazing Star

Mentzelia involucrata

Mentzelia involucrata is a species of Mentzelia native to the Mojave and Sonoran deserts of North America. Its common names include sand blazing star and white-bract blazing star. Mentzelia involucrata is an annual plant growing to a height of 7-35 cm, with larger leaves forming a basal rosette, and smaller leaves along the stem. The leaves are between 2 and 18 cm long, with an irregularly toothed margin. The flowers are generally borne singly, and subtended by 4-5 bracts; they have five sepals 7-23 mm long and five cream-yellow petals 13-62 mm long. The fruit is 14-22 mm long and 5-10 mm wide, and contains rough ash-white seeds that are 2-3 mm long. The bracts of this species are distinctive in that they are almost entirely white, with a green border. Mentzelia involucrata is of interest because it is involved in a competition for pollinators that has resulted in mimicry. It produces nectar to attract bees of the genus Xeralictus. In areas where their range overlaps, Mohavea confertiflora (Ghost Flower), which does not produce nectar, has adapted a morphology resembling Mentzelia involucrata. Recent studies have suggested that in addition to mimicry of M. involucrata, Mohavea confertiflora flowers contain marks that resemble female Xeralictus, to attract male bees that would otherwise ignore the flowers. Ethnobotany. Mentzelia seeds have been identified as a staple food source for Native American tribes of the Great Basin. In an ethnobotanical study of the Kawaiisu people, Zigmond (1981) noted that Mentzelia (ku'u)was mentioned whenever his informants were asked to list important foods, and its gathering appeared frequently in mythology. The seeds were gathered in June after flowers lost their petals, and used immediately or stored. They were parched with hot coals, then ground on a metate; the resulting food had a peanut butter-like consistency. Zigmond also claimed that clay pots were filled with Mentzelia seeds before firing, but others have questioned whether this would be possible without destroying the pots through heat shock.

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