Tissue culture is a method of clonally propagating a plant of interest. Plant tissues naturally contain meristematic cells which have not yet become organ specific, meaning they can become root, shoot, or leaf cells depending on the environment. By adjusting the ratio of plant hormones in your growth media, namely auxins and cytokinins, you can control what kind of tissue the meristematic cells begin to form. This allows for the generation of multiple new plants from a single cutting, allowing for exponential growth of your plant of interest.

Pictured above are new shoots emerging from cotyledon and leaf cuttings of Stanleya pinnata and Stanleya elata in the family Brassicaceae.

Follow for more plant facts and photos!

Wild Radish - Raphanus sativus

Did you know that radishes have such beautiful flowers?

This is the flower of the Wild Radish, Raphanus sativus (Brassicales - Brassicaceae), a cultigen, which means that is a plant that has been altered by humans through a process of selective breeding.

Because it has been in cultivation for thousands of years, its exact origins are unknown, but is thought to have originated in the eastern Mediterranean region.

Reference: [1]

Photo credit: ©Franco Folini | Locality: Glen Park, San Francisco, California, US (2002)


Arabidopsis thaliana is in the cabbage family Brassicaceae. This species is known as a model organism, meaning it is widely used by scientists as a model for genetic studies in plants. The genome of Arabidopsis is one of the smallest in flowering plants, and was one of the first to be fully sequenced. This species has a short generation time, allowing scientists to plant seeds, grow plants, and harvest new seeds within a couple of months. Arabidopsis is also amenable to genetic modification, giving scientists the ability to introduce genes of interest into the plant to observe their effects. Studies with Arabidopsis have vastly contributed to our understanding of plants and have laid the groundwork for improvement in a number of fields including agriculture and horticulture, molecular biology, and genetics. Follow for more plant facts and photos!

Alyssum desertorum “Desert Madwort” Brassicaceae

Missoula, MT
April 23, 2015
Robert Niese

Desert Madwort is a common weed east of the Cascades. Although it is an invasive plant (native to Eurasia), the madwort has been incorporated into the diets of many important PNW species. For example, Pronghorn Antelope consume large quantities of madwort in the winter when other food is scarce. And harvester ants have been known to collect copious quantities of madwort seeds in the fall, and will sometimes collect every single seed that was dropped in a given season.

Cakile maritima
Family: Brassicaceae (Cabbage)
Genus: Cakile
Species: C. maritima
Common Name: Sea Rocket
Location: NT516859
Habitat: As the name suggests this plant usually grows next to the sea. Most often found at the top of the beach where grasses such as Marram (Ammophila arenaria) and Sea Lyme (Leymus arenarius) begin to pop up.
Collector: Ewan Cole
Authority: Scop.


mình ghét mấy đứa học giỏi :((

cái bọn ko biết đùa là gì :((

đang ngồi học chợt nghĩ, nếu vẫn còn sống cho đến khi ra trường,sẽ đi phượt từ bắc vào nam, viết cho xong cái truyện lịch sử đang viết, ngủ chán chê bao giờ ko ngủ nổi nữa thì thôi, xong rồi mới tính chuyện đi làm.

bố mẹ mình mà nghe cái dự định này xong chắc tăng huyết áp mất, haha.

Năm mình 17 tuổi có viết 1 bức thư gửi cho mình năm 27 tuổi.

trong đó có viết: “nhất định 10 năm sau phải nói với Huyền là mi ơi tau yêu mi lắm.

thế mà chưa đủ 5 năm thì 2 đứa đã xem nhau là người lạ rồi, haha.

hồi đó cũng viết 1 câu đại loại: "10 năm sau mà được làm vợ của Dũng thì tốt quá”

giờ thì mới nghĩ thế thôi đã thấy =))))))))) lắm rồi =))

Chỉ nhớ mang máng cái thư như thế, còn lại đại ý các thứ quên gần hết.

10 năm nữa mà đọc bức thư kia chắc cười phát khóc mất.


J20160128-0005—Erysimum concinnum—RPBG by John Rusk
Via Flickr:
Erysimum concinnum—headland wallflower. Included in the CNPS Inventory of Rare and Endangered Plants on list 1B.2 (rare, threatened, or endangered in CA and elsewhere). Coastal bluffs, dunes & prairies from Marin County north to Curry County, Oregon. ‘“It’s my favorite local wildflower,” says Kathleen Carter, our beloved former sales rep who lives out in Inverness. Large heads of soft yellow to creamy white, deliciously fragrant flowers bloom in Spring. It is a low grower, to 12”, with a deep taproot and is a very EASY garden perennial’ (Annie of Annie Annuals.) Photographed at Regional Parks Botanic Garden located in Tilden Regional Park near Berkeley, CA.